50c Peace to Type I

Enlargement of the Workshop proof = Type IV

Enlargement of a Type I stamp

The "Type Parentage" menu deals with all the differences.

The figure on the left shows the mechanism for obtaining Type I. The effigy in black is an enlargement of the Workshop proof (comparable to Type IV). Under the buckle of the belt there is an interrupted pleat between two continuous pleats. This interrupted fold is embossed during printing, which means that the service galvano is indented for Type IV.

How to explain the disappearance of the relief (blue arrow) when printing Type I. Let's be exhaustive:

- Hypothesis 1 which is in my favour. An action of the engraver at the level of the service punch

- Hypothesis 2, a hazard (shock, others) on the service punch

- Hypothesis 3, bad copper plating of the service punch, whereas to think of the copper plating of the standard galvanos, all identical. I don't think that the copper plating by electroplating (electroplating) is in question...

Type I is found on:

Sheet stamps, 41 plates issued from 7.6.1932 to 15.07.1936
The notebooks from 7.10.1932 to 7.10.1933 for those dated, and on the first undated prints
Envelopes with postal stationery and stamped to order (TSC) envelopes