Thank you for all of these inputs. The 10c on the right does appear to have a 1952 date (however the "2" is not clear). I figured there must be more information out there to identify these printings!
Using the Sonic Imagery Labs Precision U.S. Specialty Multi-Gauge, all of these stamps are 36.2mm or less
. Looks like all of these are wet printings.
The odd (false) indicator for us was the very clear, detailed scrollwork and lighter/whitish paper, which led us to think these might be the dry printing.