Found A #557c Help To Identify?

Hi! Im new in the forum. I need some help about this stamp.
I fount this stamp in a lot. It seems perf 10 at bottom.
Maybe its a 557c?

Thanks for any help.

Hi Dec, and welcome to the forum. How did you arrive the perf 10 bottom ?

Peter

Hi Peter! I measured it by perforation gauge and stamp analyzer software. Shows perf 11 at left top and right side, 10 at bottom.

I don't know well the US stamps. Just try to find where I can get more informations about it.

The perfs do appear to be 11x11x10x11. If you think the perfs are genuine, it is worth spending for a cert, even though the odds are still likely a bit long. Which, if the stamp is a genuine 557c, won't be cheap.

I like your chances. Good luck!

I'm just dont know how could I know the perforations is genuine or not.
I made a higher resolution scan. Which is the best place to cert a US stamp? I live in Europe so I dont know any US stamp experts. Thanks

There is no point in sending the stamp to the PF, APS, PSE or PSAG until the bottom perforations are matched with flat plate and rotary perf 10. If either match, the perforations are unlikely to receive a clean cert. The perforation row in the closeup appears too regular to be genuine. The perf 10 pins added to the perf 11 row are believed to have been manually spaced over a span of about three stamps to fix a section of a defective perforation wheel. The perf 10 pins are not aligned with the perf 11 row and spacing and placement is noticeably irregular.

What do you mean , not genuine in other words,forged, or copy, of some sort please elaborate.. I have some similar on the lower end of the perf 10 s top or bottom ,also in regards to cost of certs I thought the general number for a genuine 557 c ranging in the cats at under 10 last I checked would estimate to be of the .01 -10,000 $33.00 ref. Pf society for the evaluation and cert. ? Can you be specific on cost factors. And by the looks of what I see does seem to fit the 10 perf top or bottom counting the whole preferations in a 2cm scale. Thank you for the pic and question.

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The perf 10 error has irregular perforation holes, as cfrphoto wrote above, so the hint to check the stamp to another (normal) perf 10 stamp is good, as they have regular (equally spaced) holes. If you have further questions about the fees I am sure the PF can give the best answers.

I checked with a regular stamp. The perf seems regular to me.
Too good to be true. Than I think its dont wort to send to certify.
Thanks for all help

Send it for a cert to the Philatelic Foundation. On something like this, no matter how you check it, you will never really know unless you send it in. This is definitely worth the $50 it is going to cost you to ship the stamp and pay the certification fee.

I just looked at the Siegel census of 557c and there certainly seem to be stamps with bottom perforations that are no more irregular than yours. I think the irregularity is in the holes themselves not the spacing. And lastly if not a 557c, what is it?

https://siegelauctions.com/display_...s.php?id=209

What Phil says is likely true. If the stamp is not genuine (very likely), you would probably be out around $50. On the other hand, if it were genuine, the cost would be a little over $500. But in that event you could undoubtedly sell the stamp for a bit more than the cert cost. If it were my money, the final choice would lie with cfrphoto's post. Since he sees little chance of it being genuine, I would save my $50. After all, he may very well have certified one of these himself at some point in the past.
But that's just me, the tightwad, speaking.

Looking at the other 557c's at Siegel, I'd say there is a better than even chance the stamp is a genuine 557c. If it were mine, I'd send it for a cert. Good luck, @Dec! Please let us know what happens.