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John MoranBob, I hate to shoot down your theory but the sheet your referring to is an actual OPC sheet.
Rusty Staub has 2 cards in the 1971 OPC set, card #289 (different pose) and card #560. Also if you notice in row 4, column 10 this is Eddie Kasko, he is card #31 in the Topps set, card #578 in the OPC set, therefore IMO the only dp cards (actually tripled printed) is the row that includes Tony Perez and Willie Mays. John