Proof 2c, die proof in black, showing die number "354" at base amended in manuscript to "412", on India; two small holes, one of which is in the value tablet; exceedingly rare, one of two considered to exist, the other of which is in the Canadian Postal Museum; see Argenti page 176 where he speculated that such a proof might exist

Details
Proof 2c, die proof in black, showing die number "354" at base amended in manuscript to "412", on India; two small holes, one of which is in the value tablet; exceedingly rare, one of two considered to exist, the other of which is in the Canadian Postal Museum; see Argenti page 176 where he speculated that such a proof might exist