The Stovebolt Site Forums The Shop Area Engine Shop Engine block stamped number decode

This 235 was in my 58 half-ton short step side when I bought it, but I have no idea if it's the original engine. The number stamped on the machined pad to the rear of the distributor is F072IA. It's an I rather than a 1. Can someone decode this for me or share a link? I spent about 30 minutes searching old posts and spec manuals, but could not come up with the right info. Thanks for your help.
EDIT: Casting number is 3769716 which is a 58-62 235 according to the chart I looked at.
2nd EDIT: well, bust my britches, the I IS a1, and I found the info in the post right above! I tried to delete this but it won't let me, so Never Mind. If I'm reading right, it's a 60 235 engine.