Hi,
I just bought a 70's hollow logo 21" Zildjian ride that has a number engraved under the bell. Does anybody know if this is a 'factory' number, or something somebody added later?
[IMG]http://i1143.photobucket.com/albums/n632/PurdieShuffle/znumber_zpsb55cc400.jpg[/IMG]
It can't be the weight.
John