No luck on the 67 high number article from SCD. I did find a reference in a message I was exchanging with a St Louis collector years ago who said they never got the 6th series there but did get the 7th.
I did find a 9/18/92 Brigandi Coin Co. ad showing the following semi-highs as purported SP's:
#460 Killebrew
#475 Palmer
#476 Perez
The problem with the old ads like these is they never listed the SP commons, only stars. Anyway, Brigandi's take on the high # SP's was off so who knows what their source was.
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