I think colgate has declared bonus 1:1 in 1982, 1:1 in 1985, 1:1 in 1987, 1:1 in 1989, 3:5 in 1991 and 1:1 in 1993. Hence you may write to the company and get all those shares in physical form. If there is any change in address, the same also has to be updated in the company's records. After obtaining all the share certificates, send them through your DP agency and get them dematerialised. During 2007-08, it seems that the compnay's shares were reduced from Rs.10/- to Re.1/-, by reducing the capital. Hence, for each Rs.10/- share, they will exchange for Re.1/- share. This is the infomation what I could obtain. The correctness may be verified, with some other traderji members also