Washington 1 Cent 10 Perf

Dear friends kindly does this stamp has 10 perfs. On bottom ?

Counting perforations does not mean a thing. You should use a perforation gauge to find out what stamp it is.

Peter

For a printable perforation gauge see http://www.stampsmarter.com/learnin...rfGauge.html

This stamp is perforated 11. The perforation gauge is how many perforations are in a 2cm length, NOT how many perforations you can count on a side.

Can't you also count the perforator pin punches inside the frame on these? 10 perf punch valleys inside the design = perf 11 ?

For the flat plate design above, since it is close to 2mm at top, you can approximate the gauge by counting either the peaks (if a peak lines up to one of the vertical edges) or valleys (same).

The stamp above has a peak which aligns closely to the right and left edges at top, and there are 11 peaks, so perf. 11.

You could use a program like MS Paint Classic and then use the crop to cut and paste and to compare one perforated side with the opposite perforated other side.

Caution: I think that this is a camera image, not a scan. If it is a camera, the image may be slightly skewed (hard to hold the camera exactly at 90 degrees over the stamp), and this would throw off trying to digitally compare the perfs.
Don

I agree, Don, that manipulating this image to compare the top and bottom perforations as jogil suggests, may be limited because of the angle if it is a photographic image.

As far as approximating the perforation gauge, the method I mention has consistently worked for me when following up and checking with a perforation gauge.

I will make a scan image and reupload it

petermegally - you don't need to repost the image - this stamp is perf. 11. Cheers.

Petermegally, you should print the above mentioned perforation gauge and check the perfs - that simple!

Peter

So does that mean 10.25 perfs on top & 10 perfs on bottom ?

petermegally, this is a very interesting result. I notice that the perforation gauge you are using is not the printed one from StampSmarter. Is your gauge a standard manufactured gauge, or did you print it out from a source?

The reason I ask, is that I am sure that the top/bottom perforations are actually perf. 11, not perf. 10. On the gauge you are using, it appears to be aligned with the perforation gauge scale you reference, but I am suspicious about the gauge you are using. If you copied or printed the perforation gauge, was it a 1:1 scale copy or print?

I have scanned 5 different 1c Washington stamps:

Scott 405 P.12, width: 18.50+mm height: 21.75+mm
Scott 462 P.10, width: 18.50+mm height: 22.00-mm
Scott 498 P.11, width: 18.50+mm height: 22.00mm
Scott 542 P.10, width: 18.00-mm height: 22.50+mm
Scott 543 P.10x11,width: 18.75+mm height: 22.50mm



(Note: the "+" and "-" after the measurement indicates that it is close to the measurement, but slightly less or more as indicated)

Note that for each of these stamps, the number of perforation tips along the "edge to edge" length of the top and bottom of the stamps is very close to the perforation gauge for the stamp.
For example, for the Scott 405, there are about 12 perforation tips from the left edge to the right edge, as the tips are nearly aligned with the edges.

I am curious about your stamp gauge, because it shows 11 perforation tips between the left and right edges of the stamp design, not 10. So, I conclude that yours is perforated 11 at the top and bottom, not 10.

I KNOW that the perforation gauge definition is the number of perforations counted for a 20mm length. Each of these are 18.5 to 19mm width designs. So, if I count the perforation tips, and get a number x in the 19mm, I know that the gauge will be an equal or greater number than what I count, so the same gauge or larger.

What do you think?

Dear Orstampman

First thx a lot for ur effort .

Second I have download my gauge from http://www.stampsmarter.com/learnin...rfGauge.html the second one bellow .

But I think the issue of download a gauge from the internet is something wrong , I must used a professional one .

So I will repeat the step and upload the pics .

Much easier and often more accurate is just to compare to other of your 1c stamps looking similar (similar color and design). If you compare two of those stamps or more and most have the same perforation you can guess that they are all just normal stamps :).