Looking at a Gilbarco wall mount air meter to complement my gas pump and Lubester. physically it looks in good shape. no idea on the inside supposed to have not been touched.
I believe its the first version.
what would the value be, and are parts available to rebuild them?
Thanks

don't have pictures but its a model Am31-1

Photos are essential to get a useful value opinion.

OK Got a picture. nothing from inside though
Hope this works

https://www.dropbox.com/s/naog9ofywsbl1jf/Air%20meter.bmp?dl=0

$600 imo

Thank you