China Blue Military Stamp

I have recently found an exciting, authentic, and original Chinese Blue Military stamp. I found this in a very old and very grand Philatelic collection that fell into my possession. I keep reading all these articles saying it's extremely rare and valuable. But can it really still have that kind of value? it's in extremely good condition. I was just wondering what it's value might be. As for all of the experts here where should I take it to be appraised, who does the most accredited appraisals (preferably on the east coast)? Also where is the best place to sell it? I truly appreciate all and any advice on this matter. Thank you all!

Welcome to Stamp Community Forum, DerrickS41!

Please post a picture. Otherwise, we are just guessing at what you might have. My guess is that you might have the unissued blue military stamp of 1953. You would need to have it expertized. On the east coast, Michael Rogers in Florida is probably your best bet to quickly find out if it is genuine.

But please post a picture here, first.

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$400,000 + if real. For a start the stamp measures 21mm x 32mm and is perf. 14
The counterfeits tend to have very nice perfs.