Argentina ID Help

I would respectfully ask for some help on the I.D. of this stamp.
Looks a bit like Argentina, Scott 54 (A29) but missing some features.
Possible forgery??
Thanks for your assistance.
Chuck

To me it most resembles scott 43..but its so crude.no coloring on the correos and Republica Argentina banners etc.

I think it's been immersed in water for a L-O-N-G time, at some point.

I believe the 12c numeral/envelope/posthorn with colored lettering is an essay. I've never been able to confirm that from another source, so don't hold me to that. If anyone can confirm, or better yet, provide a link or printed reference citation, I would appreciate it.

OK, I think I found a confirmation and clarification. It's a unadopted proof. Taken from the following webpage http://www.perforations.net/south-a...c-1882-1884/

There is nothing about this stamp in my Argentina catalogue (which is not as specialized as I hoped it would be), but I found out that this is a proof made after the original "envelope" design was released in order to prove that Jacobson & Co. (a local Argentinian printer) could print stamps of the same quality as the ones that were made in London by Bradbury, Wilkinson & Co.

I thought this proof had been discussed here before, but unfortunately I cannot find it anymore. Perhaps it was on a different site.

Nice work KHJ...thanks for the link !

Thanks all of you for the information. I will keep the stamp with an annotation of your information.
Hats off to KHJ for the link, will peruse it a bit later in the day after the 2nd cuppa Joe.

Some very knowledgeable folks around here.....................

Chuck

Thank you for the additional info, Jan-Simon!