Wilt Chamberlain's 100-Point Game Scoring Sheet Hits Auction Block

For the first time ever, the official Philadelphia Warriors scoring sheet from Wilt Chamberlain's legendary 100-point game is up for sale ... and it's expected to rake in more than $100,000!!!

The game was March 2, 1952 -- Wilt's Philadelphia Warriors took on the New York Knicks in Hershey, Pennsylvania.

Wilt racked up 100 POINTS that night -- the ONLY time a player has hit triple digits -- and Chamberlain famously posed for a photo with a sign that read "100."

We're told the Warriors' official team scorer's sheet -- which was signed by Wilt that night -- was taken home by the official team scorer. When he passed away, his widow gifted the item to a close family friend.

Now, that friend has decided to offer it up to a worthy collector via SCP Auctions -- the starting bid was $15,000 ... and there's already been a ton of action. The auction closes Saturday night.

Experts predict the sheet will ultimately skyrocket past the $100k mark -- since the official Knicks scoring sheet from that game sold for $100k back in 2012.