As a set collector these popped into my head...after McClain and Stanley the others may be a bit lame, but certainly fall into the criteria...

I do think the first two though are significant...especially if your looking to buy those two in NM for your sets...
1965 Topps Denny McClain RC #236
1966 Topps Denny McClain #540
(66 High Number)
1966 Topps Mickey Stanley RC #198
1967 Topps Mickey Stanley #607
(67 High Number)
1965 Topps Gary Kroll RC #449
1966 Topps Gary Kroll #548
(66 High Number)
1965 Topps George Smith RC #483
1966 Topps George Smith #542
(66 High Number)
1962 Topps Tom Tresh RC #31
1963 Topps Tom Tresh #470
(63 SP)
1962 Topps Don Clendenon RC #86
1963 Topps Don Clendenon #477
(63 SP)