Hi Fred,
This is set I am slowly picking away at....at 168/283 with a decent mix of all series/stars. Many of the common high numbers, in mid grade condition, can run $12-20 each. I sold off some of my mid grade dupes as singles and this was the range I saw them sell for. Mid grade lower number commons pull $3-6 on average also. So if this partial set has 85% of the higher #s and some of the stars, you can average out the cost per card.
Here is a 304 card lot with some higher #s that sold recently:
https://www.ebay.com/itm/1965-O-Pee-...p2047675.l2557