This is the standard TeleVue 2" mirror diagonal with 2" to 1.25" TeleVue adapter. Set screw version and threaded for 2" filters. Mechanically sound, optically excellent (little dust) but with some scuffs on the barrel and the 1.25" adapter barrel, and missing the TeleVue sticker - does not affect views :^)
Don't know what they're charging new these days, but I'd like $80 shipped in CONUS. Please feel free to e-mail with questions.