I got this Argentina today, It's very beautiful, but I found some problems when I saw it carefully at first time.

http://bp1.blogger.com/_8AMmfBQS1QA/Rrmuv1MDNRI/AAAAAAAACA8/dU_p0Be-ObY/s1600-h/2007-07-28+Argentina+Meteorite+SS.jpg
Please check large scan of this S/S carefully, could you find any special??

If you haven't enough patient to find out it, you can get quick answer in my blog.
http://myfdc.blogspot.com/2007/08/argentina-meteorite-fdc.html

the perforation is wrong?

Huh, it is interesting - 3D view Of course, I found that only after reading your blog

But I see other strange thing. It is currency - DOLLARS, when actual currency in Argentina are PESOS. And as far as I know all the postage stamps of Argentina are denominated in pesos.

Can this be some kind of forgery?

I don't know why, but all of face value on the Argentina stamps is $ and C

Ne doleris, jei neklystu doleris tai S su dviem brūkšniais? O Argentinoj tokį kodą pesui $ neretai naudoja

Sorry for lithuanian soccer, but i wrote for tractor and my english pretty bad so...

Drs said that I'm wrong, because Peso is written like dollar, but with one strike instead of two.

But USD can be written with one strike too Im confused . Anyway in this Argentina Stamp there is nothing wrong and its realy mean Pesos

Wikipedia: Dažniausiai naudojamas JAV dolerio simbolis yra perbraukta S raidė ($).

Na bet šiaip kiek pastebėjau realiai, praktiškai visur doleris žymimas su dviem brūkšniais

Yes, I checked in Scott, they actually use singly-striked S, but some years ago they used double striked (horizontally) A and in older stamps simply wrote "Peso".

So, sorry for my mistakes