
This is just a wonderful cover. This is franked with a pair of 12c #17s, and two single 3c #11A's. This pays the 30c rate, via Prussian Closed Mail to Wurttemberg. There is nothing super rare about such covers, as there are a fair number of them, either stampless, or franked with 3 10c stamps.
This is an example, however, of where a particular unusual franking (group of stamps to make up a rate) actually makes an item more interesting.
Furthermore, and to the point of this thread -- look very closely at the postal markings on this cover. Its fascinating.
The stamps were originally postmarked at Cincinnati on Oct 0?, 1853 with Red CDS's. If I am reading that correctly it appears to be a 0 for the day, which is clearly incorrect. They forgot to put the '1' slug in for '10', or similar.
They were then, once again, postmarked at Cincinnati, this time, in Blue on Oct 10, 1853.
Next, the cover traveled to New York City, where it was initially postmarked with a Red NYC exchange marking, indicating a 30c credit to the Prussian states - which is incorrect. To correct this error, NYC got out its (correct) 7c credit device and struck it over the original one, such that the PAID part of the new strike obliterates the incorrect '30' from the original strike.
The 'FRANCO' means PAID, and was applied at Aachen.
So it looks like BOTH Cincinnati and New York City made mistakes on their original postmarks on this cover, and took action to correct them. Cincinnati over-struck the original cds with a different color, while NYC used part of the second cancellation (PAID) as an obliterator for the incorrect credit rating.
When I saw this cover for sale, I knew that I would wind up with it.
