TubeNet

Stencil, maybe? Unfortunately you can't enlarge the pics on this listing.

http://www.ebay.com/itm/USED-4-valve-tu ... 2ecf8a7416" target="_blank

It's an Asian copy of a VMI 101. These are not wildly accepted as being good players. The last one I had I converted to a left-hand horn. Could be OK. Could be not OK.