Need Help To Idenity If This Is Truly A Scott 544 And Pair Is A 543

Hello everyone.
Could you please review the 3 stamps to help me identity if the single is truly a Scott 544 and the pair are not?

The first stamp perforations are 11, dull green color and measures 19 x 221/2 mm, no watermarked. This should be a 544. Apparently that is also pencil written cat # on the back of the stamp from a previous evaluator. I always double check measurements with writings in back of stamps.
The stamp has faults, but still could be the rarity one. No certifications came with these stamps. Will require one if experts feel may be the real one.

The pair of the G.Washington 1c, in my opinion appears not to be correct. (perforation. 10, rotary press? Isn't that a 543?) It was on the same sheet with the collection of 1 c stamps including with the above stamp. There is no ink markings noted in the back for a flat plate. However, the previous evaluator/owner wrote 544 10 x10 in pencil. Has the 544 ever been measured with 10 gauge? The color variety looks different from the first stamp too.
I don't believe that the pair is a Scott 544, but possibly the first stamp maybe correct for the rare and scarce stamp. I would be truly surprised if all of them were a Scott 544.
Am I correct with these identifications of Scott #'s for this single and pair stamps?
Any feedback would be welcomed. Thank you in advance.







( Doesnot appear to be a 544, but I am aware that ex printings were perforated in 10 gauge too according to other writings about the 544)

All three stamps are perf 10 and thus could not be 544, which is only perf 11x11 and extremely rare.

I'm curious how you are "double check measurements". Are you using a perforation gauge? Further, in this case you merely have to compare your first stamp side-by-side with the pair to see the perforation gauge matches.

Yes. The first one I checked it several times with my uni-safe perforation gauge. it seem to go with the 11. the second one was definitely 10 perforation.

As Hungary mentioned, all stamps are perf 10. Here are all three of your stamps aligned up next to each other, the perfs match.



Don

It is very hard to check out with the perforation gauge since it the perfs are so damage

Thank you Don and Hungry to inform me what I should be looking at. Appreciate it.

This one is another one from the bunch. The perforations do not appear to be 11. I am not sure if this color is considered dull green color.
No ink markings noted in the back, so does not appear to be a flat plate.

yes..they do appear to be 11 perforations.

The bottom vertical perforations matches perfectly inside the 11 marking.

horizontal..I need my coffee..lol

Agreed, this stamp appears to be perf 11 all around, and offset printing. #525

Do not spend time measuring the stamp design. The dimensions given are estimates and trying to hand measure these is difficult at best. Instead , consider making a few templates out of other stamps. http://www.stampsmarter.com/learnin...methods.html
Don

Thank you Don. I will try your suggestion. I only have a few of them. Great idea to use as templates. Please let me show you this last one. It appears to have perforation 11. But a different color from the off set one.

I write '544' on my green stamps but none has sold for a high price!