Space Cover 848: Unique Prime Recovery Ship CoversAs I've mentioned in a previous Space Cover of the Week, one of the area of space covers that I collect are Prime Recovery Ship (PRS) covers.
The most common PRS covers have either a Morris Beck printed cachet or a rubber stamp cachet with the same image as the Morris Beck printed cachet (except for the first Beck printed PRS cover for MA-9 that has a different cachet than the rubber stamp cachet from the USS Kearsarge). In many cases there are more than one Beck PRS printed cachet for a mission with different 'Beck numbers' as well as PRS covers with both the rubber stamp cachet (RSC) and another cachet, such as an Artopage or Mission Emblem.
Then there are what I call 'unique' PRS covers that have multiple cancels or cachets that are uncommon. This SCOTW will highlight 'unique' prime recovery ship covers.
The first cover is a First Day Cover (FDC) for Project Mercury that was also cancelled for the recovery of Gordon Cooper during the MA-9 mission with the ship's RSC. What makes this PRS cover 'unique' is that not only is the cover a FDC for the Project Mercury stamp and a PRS cover for MA-9 but it also commemorates both the conclusion of the first manned Mercury orbital mission (MA-6 with John Glenn) and the last manned Mercury mission (MA-9 with Gordon Cooper). Although there may be other covers with this dual cancel this is the only one I've seen.
Another example of a 'unique' PRS cover is for the recovery of the Gemini 5 astronauts by the PRS USS Lake Champlain. This cover has a Cape Canaveral machine cancel for the launch of GT-5 on August 21, 1965 and a USS Lake Champlain machine cancel for the recovery of the GT-5 astronauts on August 29, 1965. It also has a black Beck RSC. It appears that this cover was cancelled at the Cape Canaveral postoffice for the GT-5 launch and flown (or mailed) to the USS Lake Champlain for the splashdown. If anyone has additional information on the history of this cover please let me know.

The third cover is also a GT-5 cover from the USS Lake Champlain with a Beck RSC, but this one is cancelled for both the launch of GT-5 on August 21, 1965 and the recovery on August 29, 1965. What makes this cover 'unique' is that it's a PRS cover that was cancelled for both the launch and recovery of a mission.

The last cover was cancelled for the recovery of the Apollo 11 crew by the USS Hornet on July 24, 1969. What makes this cover 'unique' is that the cover used was made by Art Craft for the First Day of Issue of the First Man on the Moon stamp on September 9, 1969. I don't know when these covers were first available so either they were available before July 24, 1969 or this cover was backdated. If anyone knows the history of this cover please let me know.

There are many other examples of 'unique' PRS covers. Let's see some of your favorites!