Moon salt flat discs

A good friend of mine passed recently, and was a big Bonneville goer. He has some Moon discs for 15 and 16 inch wheels, and I am wondering what the average worth would be for them. They are used, but in very good condition. Thank you, B

 

You can buy them new from Speedway and others for about $100 for 4.......

 

Dunno a price but I am looking for 6-8 15's

 

Are they snap on, screw on, or Dzus?

 

I might be interested in 15" screw-on discs (4)

 

Do they have the "MOON" stamp on them?

 

I still have the screw on disks (Actually home made) on the back of the roadster. All others are genuine Moon with Dzus buttons. Do yourself a favor and install the clips. It's so much easier to check air or what ever. I would never screw on Moons again