Census of 1c Blue Green, Vertical Coil (Scott 316)
Provenance:
- Grunin Collection - Siegel Sale 404, 11/30/1971, lot 69 - $9,250 hammer
- Siegel 1993 Rarities, Sale 755, 11/20/1993, lot 250 - $70,000 hammer
- Floyd Collection - SPG 10/23/2001, lot 542 - $150,000 hammer
- The David Wingate Collection, Siegel Sale 1180, 4/11/2018, lot 310 - $170,000 hammer
Certificates:
- PFC 26482 (1967) “Genuine coil pair”
- PFC 279453 (1994) “Genuine, previously hinged”
- PFC 379244 (2002) “Genuine, previously hinged”
- PFC 550962 (2018) "Genuine, previously hinged"