Need Some Help On Some Measuring Principles, Just 1 1/2 Harding

Need some help on some measuring principles, just 1 1/2 Harding

What I wonder about, this is perf 11 * 10.5. Ok then it's 633, 659,659a or 670

This stamps is 19.20 / 19.30, anyway OVER 19.00
and 22.70 / 22.75. Repeated measurements. So let's say 19.25 * 22.75.

Then I wonder how important is the measurement after perf is found? Is it just at 1c Green Franklin it's important to separate 22.25 to 22.50 etc? Normal oversize ? The list say no over 19,00 and no over 22,50....

And can you help me with reading postmark, I know little about this, is this stamp wide spaced overprint?

But there is no chance. overprint or Nebr. overprint, so then I'm left with 633, but overprint?

A little confused but approaching a little every day

I now see that they are overprinted 1 to 1 1/2 if I have understood correctly, then this is 633. But still I wonder, is it normal that the print is so over sized?

There are a number of issues here. The stamp is not overprinted. The 1.5 cents is the actual denomination of the stamp. The cancel that says Syracuse, is just a cancel. The perf gauge seems to be showing it is 10.5 x 11, so that part is correct. The measurement of the image on the stamp can be helpful in determining whether a stamp is a flat press printing or a rotary printing because rotary stamps are slightly stretched. But it is not a definitive thing. The best approach for comparing rotary vs flat is to find a stamp that is definitely of the type you are looking for - like a cheap rotary stamp or a cheap flat plate, that is not controversial - then compare the print to the stamp in question.

Also flat press printings can sometimes have offset ink on the back and that can eliminate the rotary option.

Hope this helps.

Dronen, Yep, perforations at 11x10.5 (top, then side) makes it 633. Any of this series with perf 10.5 along a long side will automatically be a rotary press printing.
Your stamp has a Syracuse precancel (a specific type of overprint, although I have been criticized for this.). Precancel text size varies in size among cancel devices.
Sites like ebay will illustrate typical Kansas and Nebraska overprints.

This is not an overprint nor is it a cancel. It is one of the bureau precancels. The type is PSS Type 71, a commonly used type of precancel which was first applied, from the precancels I have, on the 1926 11 x 10.5 series of stamps. I have never found one of the PSS 71 precancel types on stamps of the 1922-23 Perf 11 or the 1923 Perf 10 series of stamps.

More information on the precancels can be found at https://www.precancels.com/getting-started/

thanks Becker and the rest, So now I see, the measuring its realy most for split plate/rotary, and if paper been turn from horizontal to vertical, isnt it ? I been measuring each time I get strange perf :-)

But as soon as I meet a new challenge in starting mixing terms and tecnics, anyway ... im moving forward :-)

I have been training hard and use many ours to perforations, and try to read about cancelmarks, perfins, precancel ... it is a bit difficult to see the connection and when it is advantageous with mark etc, but it is possible up to which stamp it apply

I went through 12 pieces of 10 c Monroe an hour ago, I always start measuring perforation on top or bottom, as a habit only. The first 8 was 11 perf tops, suddenly 10, what? :-) one can hope for 562c ha ha, but it was a # 591 perf 10, with security perfins BLW