Need Help With Some Imperf Pairs From Argentina

Hi. Few days ago I tryed to find some answers about my few imperforated pairs and i`m still confuse.I will post the pics maybe you guys can give me a clue about them.As far as I understand they all were ungummed as issued.On the other hand there is a guy who says and i`m quote him:
"paper looks far too new compared to original paper from the late `30 beginning of the `40s In my opinion these are, or photocopies, or printerswaste".
What do you say guys?

The green imperf pair appears to be ARGENTINA 1940 AIR MAILS, 1.25p IMPERF TRIAL PROOF PAIR -> More info HERE: http://www.delcampe.net/page/item/i...guage,E.html

I an not an authority on Argentina postage, but I suspect the other imperfs are also Trial Proof pairs.

For some of them I have found some infos but I dont know anything for sure. I dont have any catalogues to have a certain fact about them.
I`m thinking, as long as they have a number in a specific catalogue and a certain value the stamps are legit.

dopsen, I`m afraid I don`t really understand your question. As for the 1p25, have you checked for a watermark? (The stamps look suspicious to me.)

The 1.25 is printed on both side, obviously an error.
I think my question should be like that "" anybody with a catalogue, scott, yvert or michael can confirm if the stamps actually exist with a certain number and a value?
Both 1.25 pics are the same stamp front and back. Back of the stamp is the smaller one.

Edit: I found some numbers from scott`s catalogue but im not sure about accuracy of the info.
ARGENTINA 1935 - Scott# 430 Moreno Pair Imperf 10c
ARGENTINA 1940 - Scott# C41 Doulbe Side Printed
ARGENTINA 1940 - Scott# C39 Mercury Pair Imperf Set of 2
ARGENTINA 1941 - Scott# 478 Bank Pair Imperf. Set of 2
ARGENTINA 1941 - Scott# 503 Post Pair Imperf. Set of 2

The 6c Alberdi is design A135, Scott nr. 428 (w/ watermark) and 528 (w/o.)
The 5c is A174, Scott nr. 478.
The lt ultra 35c is A179, Scott nr. 503. The other 35c is the wrong color.
The 50c is AP6, Scott nr. C39. (There is a similar stamp that is AP9 in two colors, Scott nr. C44. This second stamp was also printed in 1949 as C57.)
The 1.25c is AP7, Scott nr. C41.

Thank you very much for your reply, KGB. Is good to know I have some colectible stamps.

dopsen, I'm still suspicious of the stamps, especially given that one of them is printed in the wrong color and I don't see any of them listed as being released imperforate.

Umm, can I help somehow? Its true, stamps looks unusual, no trace of gum what so ever.
For the 35c orange or what color might be I have found a reference here http://www.sismondostamps.com/World...es/7799c.jpg
If it helps.

I feel a bit better about these stamps after having seen some like it on the Sandafayre Web site:

I think these imperforated stamps from Argentina are pretty common or I might be wrong.Lately I saw a lot of them searching the net. But im not sure about the value, what they worth.
The important thing was to know for sure if I have some real stamps or just some pieces of paper with no value at all.

If the stamps are printed on the SAME PAPER that perforated/normal stamps, should be considered as imperforated stamps (imperforated pair).
If the paper is different or are printed on a glossy paper, without watermark, may be proofs.

There are also "sample stamps", printed on "paper for samples". On the back they have printed part of some of these text :

jorge, you're a good man!