2R12.1The Upper Latent Re-entry |
Plate Position - 188 of one of the 200 image plates of 1892 |
ERU: July 31, 1892 (R&S) |
LRU: Ap 12, 1893 (J. McCormick) |
Multiples: Plate Position Block of 20 - mint |
Notes: |
2R12.1The Upper Latent Re-entry |
Plate Position - 188 of one of the 200 image plates of 1892 |
ERU: July 31, 1892 (R&S) |
LRU: Ap 12, 1893 (J. McCormick) |
Multiples: Plate Position Block of 20 - mint |
Notes: |