Is This A 596 ??

Hi, I have recently received a very old stamp collection. The stamp album dates back to the 1890s and the stamps inside date back further. Anyways to cut a long story short I decided to look into this stamp and see if I could find out any information about it. After a lot of learning and testing I think I have found a 1c Green, Rotary, Perf 11 (596), but I might be completely wrong :D.

I am not sure if its flat plate or rotary, it measure 19 1/4 x 22 1/4 (from my eye) and it is pref 11 along all sides.

Here is a scan of the stamp done at 600dpi and two picture the stamp next to the gauge. I hope all my information is correct and I am not wasting anybody's time :) Ps sorry for any bad grammar and spellings, I am dyslexic.

Not a 596. appears to be a 632 (11 x 10.5)
Don

http://www.stampsmarter.com/1847usa...entifier.htm

Hi, Thanks for posting. I am tried it on 10.5 and It is way out and I not notch the 22 1/5 on the measure. I am missing something ?

perf 11 all sides = #552

Hi, like I said it is a Rotary stamp and I have tested it with the tinfoil test. So it can not be a 552 because that is a flat plate - http://www.stampsmarter.com/1847usa...entifier.htm

color looks to be that of a flat plate...

What would a tinfoil test have to do with Flat vs. Rotary? I thought a tinfoil test differentiated engraved from non-engraved.

Sorry about that, yes I could be the 552. I just check my information and I was wrong about the tinfoil test because that only test if it is a flat plate/rotary or offset. I am still learning you see :)

There's no evidence of ink wiping or other characteristics of a rotary press stamp. Upload a scan of the back. I'll bet there is ink set-off on the back which is characteristic of flat plate.

There are only 13 known examples of 596 used. The odds are against you, and your burden of proof is high.

There have been many other threads here about 596's. You should read those.

Like I said I am still learning and yes the odds are low but If you don't check you wont know. I will up load a scan of the stamp. What is the ink set-off just out of interest ? So I learn more :)

Don - The stamp cannot be a 632 because the top and bottom perforations are not aligned between rows. All rotary press stamps with the exception of perf 11 coil or sheet waste were perforated using a stroke perforator across in rows at right angle to the roll of paper. The sides of sheet stamps perforated in the direction of the row will not have aligned perforations. Immediately after the sheet stamps are perforated across the roll, the sheet is cut off of the row and the perforated in the other (normally vertical) direction. Flat plate perforations are generally not aligned between rows in either direction. Coil and sheet waste stamps were perforated using flat plate perforators.

Clark

If, and only if the info you've provided is accurate, here's what I think is going on.

US #596 is among the stamps made from rotary press sheet waste. There are very few #596's known to exist. The design would measure 19-1/4 x 22-1/2.

If it is perfed 11x11, according to the dimensions you gave I'm almost certain you have a US Scott No. 552 like Kevin said.

Welcome to the forum!



-IBFS

Hi nope it is not a #596 and Kevin and IBFS are right it is a #552. I looked it to flat plate and Rotary press and it seem that flat plate can leave a trace of ink on the back of the stamp when drying, where rotary does not (I am guessing this is what cjpalermo1964 saying with out explaining very much). I have looked at the back of my stamp and it does have the trace of green ink.

@IBFS Thanks for the kind welcome :)