2 Cents - Scott #613 Harding Identification

Yes, please private message me.
Thanks
Don

I go with the following

perf 11

design must measure greater then 22.25mm tall and 19.05mm wide because the common 610 is nearly exact to it specs of 22mm x 19mm give or take .03mm either direction but should never extend beyond that or at least out of maybe 500+ I have looked at none has yet

then I look for 3-4 similarity within the fine details of the stamp are consistent on a 610 which tends to be more sharp then a rotary press stamp and compare then on my potential 613 which tends to also not always evenly distribute ink so there are lightly inked areas that make the stamp appear almost as if it ink is faded

then I compare cancellation to that of known copies from siegel's census

then I compare the design centering to that of known copies

lastly I will inspect the back of the stamp for setoff and only consider it to be flat press if ink on the reverse is distributed in areas matching the design on the front with the understanding that there are several ways ink could have transferred but the only consistent means for flat press stamps it almost always will be distributed matching the fronts design maybe 98% of the time.

thats pretty much how I would make my determination

here are two of mine





only took roughly 2.5 million stamps and 9 months 9-10 hours a day to organize and identify them to find these 2 used examples so its possible depends on how serious you are about finding one clearly I am very serious and have plenty of free time others may not.

The corners of the flat plate stamp on the left, #610, essentially align with the side perforations top to bottom. That is, if the bottom corner aligns with the center of a tooth, the top will also.

The corners of the rotary printing on the right with the same 11-gauge perforations, #613, will not align with the side perforations because it is about 0.5mm taller, which is about half a hole or half a tooth width difference. So the top corners of this example align with the center of the teeth but the bottom align with the tops of the holes.

If all you have is an image, and it's not too blurry or pixilated, you can search this way. If you are wrong you've lost a buck. If right...

BTW, this is true for the other rotary 11-gauge rarities, #544 and #596. Easy, when you know how.

HI, I have the stamp below and wanted to know if it could be the rare Harding 2c.Scott 613
Perf 11
I used a caliper to measure and it is 191/4 x 221/2

No. You need a perforation gauge. You need to read this thread staring with the top of page one.

Thanks redwoodrandy, a gauge was used (Phila combo box) to measure the perfs. I should have mentioned that. I used the caliper to measure the design.

Welcome.

Put your calipers away, they will not help you. The dimensions and tolerances involved make it very difficult to make this a useful method for determining a rotary printed stamp. Instead make a template as shown here
http://www.stampsmarter.com/learnin...methods.html

You can also learn more about this series of stamp here, especially the section titled 'Do I have a Rotary Sheet Rarity?'
http://stampsmarter.com/1847usa/ByYear/1923.html

Don

Don, Thanks for the info.