Hi,
Came across these stamps in lot I was going through. They looked interesting and I ended up trying to find out more about their value.

In my research, I came across several sites and forum posts that I found at least partially helpful.
Last half of the page has pictures of the unissued sets from this period.
https://goscf.com/t/10793&whichpage=2Gives listing of Kingdom of Yemen stamps from 1949-1959.
http://www.ohmygosh.on.ca/stamps/yemen/yemen49.htmGives selling value for some Yemen sets, including some of the ones in my picture.
http://www.maganstamps.co.uk/Yemen.htmA post about half-way down gives some information about some of the pictured stamps.
https://goscf.com/t/39250&whichpage=3Forum post asks about Michel value of some of the stamps pictured.
https://www.stampboards.com/viewtopic.php?t=84358From what I gather:The 2 bottom stamps are part of an set from 1947, that was not officially issued. I can get a general idea of value from my 2011 San-Z Scott catalogue , that has a note saying,
Quote:
"Admission of Yemen to the U.N.
10 postage, 5 airmail and 5 postage due stamps for the Admission of Yemen to the U.N. were not officially issued for use on domestic mail. Pictured on some of the stamps were Truman, Roosevelt, Churchill and the Statue of Liberty. Value, unused: 10v postage, $35; 5v air post , $22, 5v postage due, $14. Covers, scarce and all philatelic, exist to foreign destinations."
The rest of the stamps are from a set from 1950 that was not officially released. It commemorate the 75th Anniversary of the Universal Postal Union. It appears to be unlisted in Scott, with no notes that I saw.
Perforate 12 Regular Postage: Set of 4, denominated 4, 6, 10, 14 bogshas
Mi. 114A-117A
MNH set being sold for 3 British pounds (third link)
My picture show 3 of set.
Perforated 12 Airmail: same as regular postage set
Mi.118A-121A
Set being sold for same as regular postage version
My picture show 3 of set.
Imperforate regular postageMi.114B-117B
Set selling for same as 114A-117A, 1961 Michel catalogue give value of 5DM
My picture shows 2 of set.
Imperforate airmailMi.118B-121B
Set selling for same as 114A-117A, 1961 Michel catalogue give value of 6DM
My picture shows 2 of set.
Perforated 12x6Unsure of number, unable to find so far
Unable to find value so far
My picture show 1 of regular postage and 1 of airmail.
Anyone have any idea of the value of the 12x6 perforated version of the stamps? Any other info to add on the relative value of the rest of the stamps?
Thanks!