I Am Trying To Identify These Stamps. Thank You For Your Help!

Nicely solved !

FYI Rule, an abbreviation is never followed by a comma, ever.

Not true. There are a number of cases where it is proper. The first, and maybe even the most conspicuous, case is when abbreviations are listed in series. The next one is when an abbreviated word is used as the last word in a nonrestrictive expression, known as a parenthesis. A comma may also appear after an abbreviation if it is directly followed by a parenthetical expression. Introductory statements, especially dependent clauses, ending with abbreviated words should also be set off with a comma before attaching the main clause. Moreover, abbreviated names of places used in addresses, such as province and state names, require post-comma placements as well.

Most simply, a comma may be used any time there's a need to ensure clarity: the firm's name was "John Waddington Security Print Ltd." not "John Waddington Security Print Ltd. Leeds."

Punctuation rules are not quite as strict as both of you have stated but there is a massive difference in rules dependent upon which side of the Atlantic's English you are following. I learnt in UK but spent my adult life in the US. Americans can quickly identify my origin from the way I abbreviate Ltd., but for most other words I abbreviate the American way. Wny? I have no idea.

List of abbreviations would be comma only.

Nice to have healthy debate.
Always learning, and its fun.

Franklin - Perforation: 11 top, 10 ½ side


Imperforated
Russia CUT SQUARE



Imperforated...
CUT SQUARE


Thank you for any additional details :).

Perforation 13 all; I can not find this type, approximately - 1890 - but different perforation


Israel - 1950, wrong colour


New South Wales

Your two "imperforated" items are cut-outs from postal stationery.

When I read "imperforated"
it is like fingernails across a blackboard.

The Israeli stamp has faded in the sun

Oh, I beg your pardon, I didn't know. I made some changes :)...

Don't apologise. "Imperforated" is perfectly proper English usage.

"Imperforate" is correct, "imperforated" is not (at least in American English). A stamp is imperforate, rather than made to be that way.

I'm speaking English - you're speaking American.

im - variant of in- before -b-, -m-, -p- in the sense of "not, opposite of" (immobile, impersonal, impossible [and also imperforate]

Stamps begin as sheets that are then cut by the end user, or perforated at/by the printer. Should a person take a perforated stamp and smooth the edges, they've trimmed the stamp, they haven't imperforated it. Imperforate is an adjective, not a verb.

Well, I think that's the first time my use of English has been corrected by a transatlantic correspondent. "It is not done well; but you are surprised to find it done at all" etc.

From Chambers: