Owner's Or Expertiser's Mark On US Issue From 1920's - Sloane

Anyone run into an owner's or expertiser's mark for an
S. L. Cane? Or maybe it's S. I. Cane.... Less likely a J.L. Cane or J.I.Cane....

This is on the verso of a US rotary issue of 23-26.
Has a certain Art Deco feel to it.

I'm interested in identifying the collector or expertiser.
I've already looked at https://www.filatelia.fi/experts/index.html, but I do not see it there. Google has not disclosed anything by reverse image search nor by permutations of the possible initials and surname.



post edited to note Sloane at the topic level for future searchability.

It's Sloane. Can't add anything beyond that, though.

EDIT:
George B. Sloane was a dealer and expert active during this time. Unknown if there is a connection with your handstamp. His handstamp shown in the experts site given above is (I think) the forgery. Not shown there is his pencil signature (in different styles).

Probably not much help. Looks to me like CANE was done first and then the "bullet shape and tail/S".

Well done !

Sloane, George B. USA (Mark reportedly forged) New York NY 1926, 1898–1958, dealer

You may wish to submit yours to the webmaster, for consideration
Their "sloane" differs (perhaps the forged one)

Thank you!
I very much appreciate you casting your eyes on it hy-brasil to get over my mental block on the "C" which is an incomplete "O".
Very well done indeed.

I'll pursue further, now.

My understanding is that Sloane used a pencil and signed his expertised items personally. I have seen several of these; I have been told by a few knowledgeable people that all handstamps are forgeries, but I cannot guarantee that is correct.

Very interesting, thanks Rev...

Here's a pencil signed Geo B. Slone on a 90-cent banknote, shown to us by essayk in a discussion of double paper stamps several years ago.

https://goscf.com/t/39059#354205

In the interest of collocating info re Sloane's marks, here is another signature by Sloane on a US. 142.

I suppose Sloane considered it genuine and signed it in pencil.
But maybe he had difficulty selling it just on his say-so, 'cause he submitted it to the PF in 1957 and got a positive cert #7986 back. FWIW The PF has since recertified it in 2021 (#572161).

First the verso with Sloane's pencil signature, then the front.

expertised: marked on reverse.

Jleb, is your stamp a #594?

Tipzi -
If you're referring to the initial post in the thread, my intention was strictly to explore the "Sloane" expertising stamp, but since you have delved further I will confess. It is 594-CAN-88 in the Siegel census.

I've gotten a bit interested in coil waste stamps and so it goes....

It was in a recent Cherrystone auction and afterwards I extended it for a PF cert which is positive. Neither the prior positive PSE cert nor the PF mention the Sloane expertising stamp and so I wanted to know more, but I did not want to feed at all into any of the "I found a 594" impulses that are out there. Hence I was not forthcoming on what the stamp itself was, and just focussed on the expertising mark.

I would like to get a copy of the 1941 APS cert that is mentioned in the Siegel census; it did not travel to me with the patient.

- Jonathan