Census of 1c Green & Black, Center Inverted, Used (Scott 294a)
- Syracuse N.Y. oval cancel
- Fox 7/13/1961, lot 280A (sound)
- RAS 2004 Rarities, lot 465 , few light perf creases, faint toning” - $8,500 hammer
- Cunliffe Collection, SPG 6/18/2009, lot 29 - $8,500 hammer
- 2004 APS certificate
- PFC 478678 "Genuine, light toning along the right margin, and tiny corner perforation creases at top right and bottom left"