Hmm, I was wondering about how much keyholing/minor damage would take value away as a 19" vintage K with pretty big keyholing and a bunch of edge nicks I saw went for $2k.
As for the riveting, never really noticed the in/out pattern... but I do know circumference-wise the spacing is kinda haphazard like you said. Anyway, the other 4 rivets were just like the ones I showed.
Not sure what I'll do for now... really like the cymbal a lot (even when I didn't know much about it I still liked it) but I could really use the money and still have some drum stuff to buy (isn't there always). Is that 1.5k a real definite thing or is there a chance it might not go for so much? I'm still quite the beginner so I'm not so definite on styles I play although I guess for now and in winter percussion pretty much rock playing, but I do love jazz. It's my absolute favorite for saxophone, I'm just not so well-versed in the drumming aspect of it. Another thing I wonder is that probably someone out there who is an avid collector and a really experienced player could probably appreciate the cymbal more, although I dunno.