This Campagnolo seat post appears to have been partially stamped once off-centered, then subsquently corrected in position then stamped again. Apparently the front and back engravings are stamped at the same time as th e mistake occurs with the Campagnolo logo on front as well as the size and patent text on back.
It's hard to photograph all the details, but these photos should give you a n idea...
Front side:
http://www.fooriders.com/
Back side:
http://www.fooriders.com/
Tam Pham
Huntington Beach, CA