How would you price a 1795 Flowing Hair half dollar in F+ but with a hole in it?

The hole is through the 17 portion. Otherwise a very original looking coin. A local friend of mine owns it. I told him I would be interested in it if he sells. Holed coins are not for everyone but I tend to like them for some reason. I have quite a few holed CBH which I commonly pick up for $20 or so. But this is a flowing hair
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Liberty: Parent of Science & Industry
<< <i>Take the diameter of the whole and multiply times 1.275 then divide that into pcgsprice guide for the grade and then multply that figure by 27.5% and lastly confirm with Lordmarcavan or whoever you spell his name
What he said, plus or minus 70%
Liberty: Parent of Science & Industry