Registered Mail With Souvenir Sheet

I found this in a flea market a few years ago. A piece of registered mail with the imperforate 1934 souvenir sheet, plus a perforated version of the stamp. I'm sure the recipient was a stamp collector.

This was the envelope which the USPOD Stamp (or Philatelic Sales) Agency used to send postage stamps to a collector/customer following a purchase. They often used the postage on the envelope that was the primary stamp on the order. In this case, I think the postmark is April 1935 so that would not have been the case.

Nice cover. That souvenir sheet is harder to find used than mint and finding it on cover is still nicer, even if philatelic (which most of them are).
In April 1935 the collector was probably ordering some Farley Follies and it is impossible to tell without wider margins whether this is a 750 or 770. Might be the 770, attached with some sort of glue (since the 770 was issued with no gum). Either way, nice find.

I have a few of these covers from this era, but they just have various Prexies on them, as one might expect from the late 30's-early 40's.

The same collector received this cover a dozen years later.

One more envelope that this collector had, with 33 cents of postage on it.

The Agency used all sorts of current or close-to-current postage on their mailings. Here are some other souvenir sheets:



Well so much for the new image software. They were upright on my laptop.

And sometimes they used full panes of 50:

Opinions will differ (and they have, right here), but the mailing of stamps from a philatelic bureau is not necessarily a philatelic cover. Definitely philatelic-adjacent, but how else were they supposed to accomplish the delivery?