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Hello Everyone.
My name is Jim and I live in Central California. I have 2 stamps that sre almost identical. I don’t have a perforation gauge so I am unable to check the count myself. Gemini and CoPilot both give me conflicting answers. Please note my grid is 25 x 25 pixels for each square. Gemini Tells me the top stamp is E12 and CoPilot tells me the bottom stamp is E12. Any help would be greatly apporeciated
@california-kid Welcome to the Stamp Collectors Community.
This first image upon your Post is US Scott # E12, Gray Violet, Unwatermarked, Perforation 11, Issued on July 12th, 1922. CV Unused $45.00.
If you utilize other Catalogues in lieu of Scott, here are the most popular Catalogues out there along with this stamp’s Cat # for your reference…
Michel # 258IAb
Stanley Gibbons # E648
Yvert et Tellier # E9
The second upon your Post is US Scott # E12a, Deep or Dark Ultramarine, Unwatermarked, Perforation 11, also Issued on July 12th, 1922. CV Unused $55.00.
If you utilize other Catalogues in lieu of Scott, here are the most popular Catalogues out there along with this stamp’s Cat # for your reference…
Michel # 258IAa
Stanley Gibbons # E559
Yvert et Tellier # E9b
I hope the above information proves helpful to your needs, and has inspired you to keep on collecting stamps.
Jan M. Blaha
APS# 238933
@california-kid searching further, if the color varieties of the stamp presented upon your Post are MNH (Mint No [Never] Hinged) the respective CV (Catalogue Value) would be as follows:
E12 = $95.00
E12a = $130.00
Usually such stamps, in good condition with no faults can sell for 60% CV.
This does not consider CV when taking Grade into account. I myself do not use this aspect of Grading for CV personally, I am old school (I use Avg., F, F-VF, VF-XF, and XF). But @ryanjoneson is quite familiar with this facet of US Stamps valuation.
Jan M. Blaha
APS# 238933
Thank you everyone. That sure helps

























