I have a snare listed at vintage LUDWIG Snare 14" x 5" Keystone Badge

Based on my failing eyeballs, the badge does not have a serial number. I am going to check again tonight. The badge is attached via a hex nut instead of a round grommet(?). Don't know if that tells more or not. Any input will be appreciated.Help2

I also have a few other items up for sale - a REMO Legero kit and a PureCussion RIMS kit.