Forgeries of these stamps were made for packet trade. Both the originals and forgeries are lithographed but forgeries are more crudely re-produced. Forgeries exist both in perforated and imperforate. Below is side-by-side comparison of genuine (left) and forged (right) stamps of the Child Third Air Post Issue (1932) Sc C63-C70, Mi 348-355.
Other examples of stamps fabricated for packet trade and widely distributed include Fourth Air Post Issue (Scott C18-C20, Michel 121-123. ) and Child Second Air Post Issue (Scott C55-C62, Michel 340-347).
The key identifying characteristics
- more crudely re-produced
- unwatermarked, yellowish paper
- visible grease watermark patterns on some stamps
(click to enlarge, then click ⊗ in the upper right corner)
(click to enlarge, then click ⊗ in the upper right corner)
(click to enlarge, then click ⊗ in the upper right corner)
(click to enlarge, then click ⊗ in the upper right corner)