Recent Purchases USA

Hi to all

This is some of the stamps that I purchased for 8cents each.
I bought 178 some are duplicates, but others I am still sorting.
I know they are fairly common, but I seem to have got a bug for collecting USA as well as George V Australian stamps.
I am trying to have a cut-off point of 1945 with USA stamps, but there is a little bit of overlap.
Regards
Horamakhet

In your third scan, the first two George Washington regular issues are perfins. Thanks to Ryan, the O(B) perfin was defined in a previous thread as:

O(B) - Ohio Brass Company, Mansfield, OH - perfin pattern O1, rarity factor E

Very nice - I always loved those National Parks stamps. Those were some of the most exciting stamps for me to get as a kid. Especially when I would get one that I had only seen in black and white to that point. Great memories. Still need to pick up the imperf sheets sometime. Those were always out of my reach as a youngin

Hi wt1
What is rarity Factor E.

The other perfins are 2 cents and the last 10 cents I inside a U, 8 cents is RWC and CO, Maybe a railroad? The first 10 cents looks like a d with an H and some other letter monogramed inside.Perfins are interesting as they give you an insight of the social history of a nation.
Regards
Horamakhet

Good looking lot you have acquired there horamkhet! Especially the National Parks Farley issues.

Rarity factors range from A (most rare) through F (most common). Therefore, Rarity Factor E would be a reasonable common stamp, probably not worth much from a value standpoint.

As for Ohio Brass, they were bought out in 1978 by Hubbell Power Systems of Orange, CT. Checkout pages 2-5 at this link for information on the company and what they make:

http://www.hubbellpowersystems.com/...CE-ATstd.pdf

I can't speak for the other perfins in your scans, as there are specialized catalogs that identify these perfins (which I do not have). Maybe some others on SCF can answer your question as to the identification of those examples.