A true one-of-a-kind pair of Michael Jordan's Air Jordan 1's just hit the market and they're literally from before the start of all J's -- 'cause it's his sample sneakers!

Yes, a sample sneaker ... meaning these red, black and white kicks were specifically made for His Airness to test out before releasing 'em.

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And, these samples are verified .. with the code "850204-TYPS" on the tongue which means these 1's were made between February and April in 1985 -- and TYPS is "Tong Yang Player Sample".

Another dope authentication check is the mismatched sizes .. 13 for the left foot and 13 1/2 for the right  -- 'cause MJ always wore a bigger size on his right foot!