Black print trials

Test print at Type I on thick greenish black paper

Test print at Type I on thick black paper. Block of four sheet top.

Peace Type sheet stamps were printed in letterpress in sheets of 100 on Chambon type presses.

From the original punch we draw a lead countertype which is used to make a service punch by electroplating. This punch is used to strike 50 lead impressions which will be assembled in two blocks of 25 (5×5) separated by a bar the width of a stamp and completed by vertical and horizontal rulers. Treated by electroplating we obtain a typical galvano which corresponds to a half sheet.

The assembly of two galvano type constitutes a sheet of 100 stamps

The assembly of two galvano galvano type (GT) of 50 stamps will constitute a sheet of 100 stamps.

So what about the essay below, which is a real rarity from the scraps of Paris Brune's printing press?

These are two Half Galvano Type representing a half vertical sheet on extremely thin white paper.

At least three prints were made and superimposed on this sheet.

Ink quality is poor. Stamps could be Type III (See Many Types tab)

It is probably a preset on a manual block of the printing house. For what reason, the mystery remains!

One could almost guess a type III on certain effigies? More surprisingly, effigies look different? This is particularly the case on this enlargement below: top row second from the left? (among others...)

Effect of printing pressure? Different hallmarks?

This exceptional piece refers to more questions than answers. The Boulevard Paris Brune printing works will never reveal all its secrets. Two half GT for a sheet of fifty stamps? Almost all different effigies? At least one poor quality triple print? Very thin sheet with wide margins? Mystery !