Perf Expert Needed Scott A155 Franklin 1 Cent

perf expert needed? scott A155 franklin 1 Cent sc552 ,sc575 ,sc581 ,sc594 ,sc596 ,sc597 and sc604 all the same design? my objective is to locate the correct scott number and the exact perf?

Probably Scott 632 (perf 11x10.5). The horizontal & vertical gauges appear to be different, eliminating all perf 10 & perf 11 issues. This leaves Scott 578 (perf 11x10) and Scott 632. First, 632 is by far the more common stamp. Second, 578 is generally a deeper green color whereas yellow green is common for 632.

What do the horizontal and vertical perforations gauge with a perforation gauge?

thanks again JL mostlikely a scott#632 I will check and re check!

And definitely if it's a Sc#578 another jackpot cover!!

last year I purchaseda hord of Olofson Estate covers.This being one of them!see image attachment>

The yellow green color is characteristic of the perf 11 x 10 1/2 Scott 632. The 1933 postmark date is about eight years after the rather short usage period for any of the better 1 cent varieties. Some were not documented or listed in the Scott catalog until years after they were issued.

yes JL I located this additional Olofson cover dated 1938 and the A155 Franklin is much darker.see additional cover photo>this cannot be a Sc#632 on this one?

Sorry, but I would lean towards 632 for this one as well. Not as certain though. The scan is rather small & I can't discern whether the stamp is perf 11x10.5 or 11. Scott lists both green & yellow green as colors for 632. And this stamp is still not as deep a green as one would expect for some of the better A155 issues. Give yourself a Christmas present & invest in a perforation gauge ... takes the guesswork out some of the id chores you will encounter. There are some inexpensive clear plastic ones that can easily be used for stamps on cover.

Edw.kim, those are some nice covers. I am surprised no one has yet suggested that you search on this forum for some of the other Scott numbers. There are plenty of posts on here that show all of the colors for the varieties of these stamps.
And yes, JLLebbert's suggestion to invest in a perforation gauge is a very good one. One of the first things a philatelist needs!

Peter

This is what a SC 578 cover looks like. The color is never yellow green. The cancel is usually 1924 or 1925. Anything from the 1930's would be extremely unlikely unless it was sent from a stamp dealer.

JL I am definitely taking your advise here .invest into a perf gadge
.a clear type perf gadget as to view covers. hope the others are not angry with me. it's all a matter of getting it done.regards edw_kim

ps-i will inform you of thee results!

JL. I bought a Clear-View Perf Guage on ebay Today!

Another Olofson Cover may have a valuable stamp Sc#557(A160)

Theodore Roosevelt 1922-1925 the Sc#557 letter"c" 557c says if perf 10

top or bottom of the stamp value $11,000 on a cover $17,500.00

the cover attached here looks perf 10 on the bottom of stamp Sc#557?

see photo scan>re-1934 postal cover>Other versions of the (A160) are

Scotts 586, 602 ,637 ,648 ,663 ,674 , and ? how many versions of this stamp are there?

Scott 557c is an example of the rare US compound perf stamps. Scott 557 (and the rest of the same series) is perf 11 ... on all sides. The rare compound perfs will be perf 10 on one side ... either the top or the bottom. You should be forewarned that there is another series of the same design (see Scott 586) that is perf 10 on all sides.
Incidentally, I did read a few years ago about a stamp club in California that was practicing with perforation gauges. One of the sample stamps provided by the group's mentor didn't seem to fit any of the stamps in the catalogue. But they were using a Scott volume 1 rather than the US specialized (the compound perfs aren't listed in vol. 1). Don't remember which stamp it was but, as I recall, the article indicated that it was being offered at auction for $14K. So while both the stamp & miracles are extremely rare, both do exist/occur.
Added: Forgot to answer your question about the number of A160 varieties. The answer is that you've pretty much mentioned all of them. They are easily told apart via a perf gauge and observance of the presence of an overprint. 648, 663 & 674 are the Hawaii, Kansas & Nebraska overprint respectively. 602 is the only coil stamp, perf 10 vertically (top & bottom will always have straight edges). 557 is perf 11, 586 is perf 10 & 637 is perf 11x10.5. This represents all of the major catalogue numbers. Then, of course, there is the one minor number ... 557c.

Thank you for posting.
I measured dozens that I kept in a glasine envelope.
Now they are organized ))

Useful link:
http://www.theswedishtiger.com/ID557.html

As much as I understood,
Perf 11 x 10/2 = Scott 637
Perf 11 x 11 = Scott 557
Perf 10 on any one side = 557c
Siegel Auction about Scott 557c:
https://siegelauctions.com/lot_grd..../2020&symbol[]=All&lotclass=All&syear=All&pfoper=All&pseoper=All&pfgrade=&psegrade=&gandor=or&keyword=&catselect=eq&pscolumn=default&pssortby=&sortord=DESC&photo=&calledfrom=lkp

This was ALL great additional perforation information! thank you for your kind opinions;nevertheless ,i still have 100s more Olofson covers. ALL dated pre-1950s to inspect...Cheers and continue on...edw_kim

My Perf Gauge finally arrived in the mail,and I am about to check and re-check many Olofson Covers! See perf gauge photo>

Any interesting find?