Some catalogs do not discriminate between the top and bottom imperforate edge versions of this stamp.
The catalog codes of Stanley Gibbons and Unificato apply equally to both versions.
Some catalogs do not discriminate between the top and bottom imperforate edge versions of this stamp.
- Footnoted in: Stanley Gibbons, included in Sg:DE 1806a
- Footnoted in: Unificato, included in Un:DE 763a