Numismatic (coins and notes) investment
- Thread starter niftyoption
- Start date
ये है भारत का 10 हजार रुपए का नोट, 1938 में छापा गया था पहली बार
http://money.bhaskar.com/news/MON-P...-up-to-rs-10000-denomination-4955942-PHO.html
http://money.bhaskar.com/news/MON-P...-up-to-rs-10000-denomination-4955942-PHO.html
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How coins are minted
Minting is an age-old process with stages that are still followed after centuries, though these days state of the art technology has made the process speedier and less expensive. The basic methods are still used today but on a grander more efficient scale with greater quality control. For example, modern coin presses still consist of one working die for the obverse and another for the reverse, together with a circular piece of hardened steel known as a collar which forms the coin’s edge.
Minting Machines of Coins in 1930's.
Step 1
All coins begin as a design, which is made by an artist who may prepare the artwork by hand with paper and pencil or using computer software. An effective coin design is the product not just of a designer’s artistry or skill but of his or her research skills and the ability to work from a huge range of visual references. Coin designers are gifted artists, who develop scenes and impressions not only on a refined space and shape, but also with a 3-dimensional aspect, using different heights and surface structures of the coin to enhance their designs.
Many coin designs start with a number of different designers handing in their proposals and a committee choosing the best of them. Some coins are issued as part of a series and designs contain elements that are repeated on all coins in the collection.
Step 2
The selected design and all its details are transferred on to a plaster mould made up to five times the size of the actual coin. Working on this larger scale enables the artist to perfect the design to the finest detail. Today this is done by computer software.
Step 3
This is the sculpting stage that renders the design in relief rather than as a flat piece of illustration. Working with small tools on clay, the sculptor creates a three-dimensional sculpt that forms the basis of the coin relief and is in effect a negative of the finished coin. As only plaster is being used at this stage, any errors made can be corrected easily.
When you use a magnifier on your coins, you will see the different layers that make up a good coin design – coin designs are like little sculptures, and different sizes and thickness of coins will create different challenges to the designers.
Step 4
The design on the plaster is then transferred on to a rubber resin mould, which is then used to make an epoxy resin mould. The matrix is mounted on to a reducing machine called a transfer-engraver. The machine then reduces and transfers the design to a carbide tool that cuts the design into a blank steel die.
Step 5
The transfer-engraver uses a stylus to trace the exact contour of the mould on to an engraved master die. This die is the same diameter as the coin to be struck.
Step 6
A master die is used to produce working dies for the striking process. Due to the tremendous pressure, these will wear off after a certain number of strikes.
Step 7
The coining metal is supplied in huge coiled strips which are cut into the required shapes by blanking presses. The blanking press then punches out blank discs of metal to be used for minting the coins.
Step 8
The blanks are checked and then passed into the annealing and blanching stage, to be washed and brought to a brilliant light lustre suitable for coining
Step 9
Proof blanks are fed by hand into automatic presses. Proof quality does not allow any mass production.
Step 10
The final, actual minting stage is the transfer of the design to the metal coin blanks to be struck. The blank is impressed between the two dies with variable pressure that can reach several hundred pounds per square inch. The pressure and duration of each strike will vary according to the metal type and coin characteristics. The press of the dies on the blank form the shape of the finished coin. The number of strikes a given coin will receive is depends on the material used and the required finish, which could be a mirror-like finish or one that appears antiquated. Some coins may even receive a hand-painted finish.
Step 11
Now struck, the coins go through a final inspection to check for flaws. They are then capsuled and packaged.
Minting is an age-old process with stages that are still followed after centuries, though these days state of the art technology has made the process speedier and less expensive. The basic methods are still used today but on a grander more efficient scale with greater quality control. For example, modern coin presses still consist of one working die for the obverse and another for the reverse, together with a circular piece of hardened steel known as a collar which forms the coin’s edge.
Minting Machines of Coins in 1930's.
Step 1
All coins begin as a design, which is made by an artist who may prepare the artwork by hand with paper and pencil or using computer software. An effective coin design is the product not just of a designer’s artistry or skill but of his or her research skills and the ability to work from a huge range of visual references. Coin designers are gifted artists, who develop scenes and impressions not only on a refined space and shape, but also with a 3-dimensional aspect, using different heights and surface structures of the coin to enhance their designs.
Many coin designs start with a number of different designers handing in their proposals and a committee choosing the best of them. Some coins are issued as part of a series and designs contain elements that are repeated on all coins in the collection.
Step 2
The selected design and all its details are transferred on to a plaster mould made up to five times the size of the actual coin. Working on this larger scale enables the artist to perfect the design to the finest detail. Today this is done by computer software.
Step 3
This is the sculpting stage that renders the design in relief rather than as a flat piece of illustration. Working with small tools on clay, the sculptor creates a three-dimensional sculpt that forms the basis of the coin relief and is in effect a negative of the finished coin. As only plaster is being used at this stage, any errors made can be corrected easily.
When you use a magnifier on your coins, you will see the different layers that make up a good coin design – coin designs are like little sculptures, and different sizes and thickness of coins will create different challenges to the designers.
Step 4
The design on the plaster is then transferred on to a rubber resin mould, which is then used to make an epoxy resin mould. The matrix is mounted on to a reducing machine called a transfer-engraver. The machine then reduces and transfers the design to a carbide tool that cuts the design into a blank steel die.
Step 5
The transfer-engraver uses a stylus to trace the exact contour of the mould on to an engraved master die. This die is the same diameter as the coin to be struck.
Step 6
A master die is used to produce working dies for the striking process. Due to the tremendous pressure, these will wear off after a certain number of strikes.
Step 7
The coining metal is supplied in huge coiled strips which are cut into the required shapes by blanking presses. The blanking press then punches out blank discs of metal to be used for minting the coins.
Step 8
The blanks are checked and then passed into the annealing and blanching stage, to be washed and brought to a brilliant light lustre suitable for coining
Step 9
Proof blanks are fed by hand into automatic presses. Proof quality does not allow any mass production.
Step 10
The final, actual minting stage is the transfer of the design to the metal coin blanks to be struck. The blank is impressed between the two dies with variable pressure that can reach several hundred pounds per square inch. The pressure and duration of each strike will vary according to the metal type and coin characteristics. The press of the dies on the blank form the shape of the finished coin. The number of strikes a given coin will receive is depends on the material used and the required finish, which could be a mirror-like finish or one that appears antiquated. Some coins may even receive a hand-painted finish.
Step 11
Now struck, the coins go through a final inspection to check for flaws. They are then capsuled and packaged.
Two rupee Coin
Subhash Chandra Bose netaji 1996 error date (Very Rare Coin)
The above coin may look like a normal circulated coin. A look at the date and we see 1996; but Subhash Chandra Bose, also known as Netaji, was born in 1897 and his centenary was completed in 1997. The Calcutta mint released a small quantity of Bose centenary coins in 1996, making the above coin a rare one. The date on the coin is the error. This one is quite pricey even in the shown condition, and the current price is shooting up like anything because it is not available at any place.
2 rupee: Subhas Chandra Bose, 1997 (not rare coin)
Subhas Chandra Bose ( born January 23, 1897; presumed to have died August 18, 1945 although this is disputed), popularly known as Netaji (literally "Respected Leader"), was a leader in the Indian independence movement.
please put image of those loads of such rare coins .....
total mint is not in loads of this coin subhash chandrabose 1996
if you have this coins loads you will earn crores of rupees
subhash chandrabose 1996 coin
The Calcutta mint issued this coin to commemorate Netaji Subhash Chandra Bose centenary coins in 1997, making the above coin a rare one. The date printed as 1996 on the coin is an error. Because Netaji Subhash Chandra Bose was born on 23rd January 1897 and his birth centenary completes in the year 1997 not 1996.This is one of the rare Republic India Commemorative Series Error coin.
The year lettering of 1997 is very Common but 1996 is rare one.
Identification of fake coin.....
below coin is original
total mint is not in loads of this coin subhash chandrabose 1996
if you have this coins loads you will earn crores of rupees
subhash chandrabose 1996 coin
The Calcutta mint issued this coin to commemorate Netaji Subhash Chandra Bose centenary coins in 1997, making the above coin a rare one. The date printed as 1996 on the coin is an error. Because Netaji Subhash Chandra Bose was born on 23rd January 1897 and his birth centenary completes in the year 1997 not 1996.This is one of the rare Republic India Commemorative Series Error coin.
The year lettering of 1997 is very Common but 1996 is rare one.
Identification of fake coin.....
below coin is original