![National, C-series Roundneck Green Duolian Resonator Guitar, 1934 - Rich Robinson (The Black Crowes) | Tune Your Sound National, C-series Roundneck Green Duolian Resonator Guitar, 1934 - Rich Robinson (The Black Crowes) | Tune Your Sound](https://www.tuneyoursound.com/sites/default/files/dsc07916.jpg)
National, C-series Roundneck Green Duolian Resonator Guitar, 1934 - Rich Robinson (The Black Crowes) | Tune Your Sound
![Bob Weir | Owens, Resonator guitar, used with RatDog | From the Vault: Property from the Grateful Dead and Friends | 2021 | Sotheby's Bob Weir | Owens, Resonator guitar, used with RatDog | From the Vault: Property from the Grateful Dead and Friends | 2021 | Sotheby's](https://sothebys-md.brightspotcdn.com/dims4/default/0cbfe29/2147483647/strip/true/crop/2000x2000+0+0/resize/2048x2048!/quality/90/?url=http%3A%2F%2Fsothebys-brightspot.s3.amazonaws.com%2Fmedia-desk%2F74%2F5e%2F54d8eb62474f8f6df0fd067d1314%2F033n10167-bxkq3-1.jpg)
Bob Weir | Owens, Resonator guitar, used with RatDog | From the Vault: Property from the Grateful Dead and Friends | 2021 | Sotheby's
1954 National 1125-Dynamic Sunburst Archtop Electric Guitar, Serial | Lot #84061 | Heritage Auctions
![File:1929 National Triolian (serial number 1081) - ResoSummit 2012 (2012-11-09 17.40.22 by brad bechtel).jpg - Wikimedia Commons File:1929 National Triolian (serial number 1081) - ResoSummit 2012 (2012-11-09 17.40.22 by brad bechtel).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/7/7a/1929_National_Triolian_%28serial_number_1081%29_-_ResoSummit_2012_%282012-11-09_17.40.22_by_brad_bechtel%29.jpg)