Campagnolo Racing T Crank Numbers (raised numerals on inner face)
Purchased a late 90s Litespeed Appalachian equipped with a Campy triple crankset ("Racing T"; 170mm). There are raised numerals on the inner face of both cranks -- 054 on the left crank and 064 on the right crank. I've searched the Campy website, but these numerals don't correspond to a product number. Anything I can find in bike forums implies these might be date codes, but I haven't found the master code list. Can anyone clear this up for me? Just curious as to what the numbers mean and why they differ between the left and right cranks, but don't correspond to a part number. Thanks for any insight you can provide.