Hi all, I have 3 chainrings up on ebay that I have no idea of the date on, I got them second hand about 10 years ago... they should fit early shimano...one is marked specialized, but the other 2 have no markings at all... they are 130bcd and huge (64, 61, & 60 tooth)... One is new, the other 2 mildly used. (I got the go ahead to post them here.) Item numbers: 330239789637 & 330239790077 & 330239790344 thomas seaman portland, oregon: us of a