Seacraft History Lesson

[PackRat]

Newbie here...
I'm looking to purchase a 1974 20' CC I/O project. I have heard much about "Potter" hulls over the years but do not know details of what years they were built and were there other hulls in those same years by other builders? What specifically make a Potter hull better than later years - thicker laminates? more stringers? Overall better quality of workmanship?

Also, is there any hull no, marking, construction ,etc that would clue me in on builder? I searched through old posts but could not come up with anything. Also, this boat does not have the "flush" bow rail channel around the gunnel/gunwhale
- I have seen '75's with this so assume this feature came in then.

Thanks for any info you guys can provide.

Thanks also for your patience if this subject has been beat to death on previous posts.