Census of 30c Ultramarine & Carmine, Center Inverted (Scott 121b)
Notes:
- formerly 121b-CAN-WS-02
- Cork cancel
Provenance:
- 09/29/1993, Ishikawa Collection, Christie's NY “negligible shallow thin”, Lot 745
Certificates:
- PF 55684 (1976)
- PF 276497 (1993) Genuine, small thin spot top right
- PF 519111 (2014) Genuine, small thin spot at top right