Bought this as just an interesting multi stamp cover anything with a special stamp catches my eye i only just noticed that the precancels on the 2c postage dues are inverted,there was no mention by the seller
No need of a mention as that was pretty common in that day. I just really like that cover though! Nice except for the crease but very busy looking and colorful and just a lot going on with it. heck it was even damaged and re-sealed by the post office along it's seemingly arduous journey from L.A. to Michigan! Thanks for showing it!
Hold everything! The resealing adds substantial value. I can't tell which seal it is, from among #OX-21 through #OX-27 (see Scott Specialized), but the catalog values "on cover" range from $10 to $85, with some perf varieties unpriced.
And forget about the crease. When it's rubber-stamped "received in bad condition," anything goes, and just adds authenticity.
Suggest you measure the perfs on the seal, very precisely, and report back. Your choices are: 12x9; 12x8.5; 12.5; 8.5; 12x9.5; and 11.5 -- that takes us (for this design) through the end of the 1930s.