posted 03-06-2008 03:39 AM
As noted on my Crew Patches site there exists a version of the Apollo 12 patch that looks very similar to the crew patch but which has a plastic backing and so is presumably a later version.
On the site I note two subtle differences that are visible on the front of the example I have when compared with the regular crew patch:
The distinctive pattern of stars is identical but there are a few subtle differences. In particular the replica version lacks a dark line on the prow of the ship and a dark shadow on the jib (the triangular sail at the front).
These differences are confirmed by an example currently listed on eBay.
At first glance it's a crew patch but if you look at the two indicators I mention you can verify (without needing to see the back) that it's the plastic-backed version.
In any case this is still an interesting patch, and apparently a pretty rare one as it doesn't seem to appear any more frequently than the bare back crew patch.