from TMZ,

Hockey fan?! Ridiculously rich?! Listen up if you wanna own a piece of sports history, 'cause a 170-year-old hockey stick -- estimated to be worth MILLIONS -- just hit the auction block.

The stick -- one of the first-ever made -- is believed to be from the time period between 1850 and 1870 ... as the game of hockey was being invented.

Here's the deal ... in 1980, a couple -- Gary and Germaine Morse -- discovered the one-of-a-kind stick sitting in the closet of a Vermont home they recently purchased.

The Morse's had no idea what the stick was worth ... so they had it assessed.

The value, according to the expert fine art appraiser?

3.5 MILLION DOLLARS!!

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