Andy Warhol Mao Large Poster Silkscreen

No signatures, printers or publishers stamps or marks.
The size of the sheet is approx. 40" x 27". The print is on thin paper laid over harder one.
There are different editions, the first one was in 1974. Some signed, some not but from what I found they all bear some kind of printing info at the edges.
So would this one having none of those (hope they did not cut the sides of the paper for fitting purposes) mean that it has very minimum value or I should keep researching?
Thanks

 

I rather suspect it a screenprint from the 1990 edition. If your dimensions are accurate the sheet has been trimmed, eliminating the typography on the left. A visual comparison seems to confirm this theory.

 

Thanks for your reply. Do you happen to know how many 'official' editions were there of this print? So, far I know about the 1974 and 1989-1990 ones. They seem to be the same sizes(or with a very slight differences that may be due to the measurement of the sellers).
I would think mine would be the later one judging by the well-preserved condition of the sheet. But I cannot be sure if the sides were trimmed down. Is it possible what I have to be some kind of reproduction, an unofficial copy?
I guess it will hurt the value a lot as I have no COA and no proof what year was the editoon and by what publisher? In this case, what can I expect money wise?

 

I agree with Alec.

 

Thanks for the reply.
Are there any visual differences in the two versions?
I am not finding a lot of 1989-1990 examples.
http://www.invaluable.com/auction-lot/andy-warhol-mao-wallpaper-21-c-d4640a3412
http://www.artvalue.com/auctionresu...sa-andy-warhol-a-retrospective-19-3401209.htm

Interesting that the 1974 edition was selling for 3-7k in 2008-2010
http://www.artnet.com/auctions/artists/andy-warhol/mao-2

and many times more 2012-2013

http://www.artnet.com/auctions/artists/andy-warhol/mao-19
The one that sold at Christies for $37.500 even seems to be without signature.

 

This is the first time I've seen any markings of Best Answer here. It looks like anybody can mark a Best Answer (not only the OP). Should be interesting!

Fig

 

Actually I cannot figure who marked it as best answer? I have not.