Clemente Set Question - 1971

Thought I would tackle a couple of Hall of Fame player sets, and in my research, I noticed that Clemente's 1971 Topps card is significantly more valuable than his 1967, 1968, 1969, 1970, etc. It really sticks out. What is the reason for that one card to jump in value over earlier issues?
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There has been a lot shilled auctions and fake sales of the card that have people believing it is rare or should be $600.
Right now it is all in perception not reality and I think it will eventually come down in price.
WTB: PSA 1 - PSA 3 Centered, High Eye Appeal 1950's Mantle
<< <i>Related topic: what's the deal with the 73 Clemente? He died in 72, but they produced a card anyway.... But it doesn't mention his death. Is there a story to this? >>
He died on December 31, 1972. The '73 Clemente was in the first series. I'm sure it was already produced before he died. If it was still in the design phase, I'm sure they would have made it an "In Memoriam" card like the '64 Hubbs. Hubbs died in February of '64 but his card wasn't issued until the last series, giving them plenty of time to modify the design of his card to indicate his passing.