These vintage  "Plumetis Express" size 3 ready made monogram letters were sold to speed up the preparation of a French mademoiselle's trousseau, the 3D stitched letters were much easier to apply.
 
There is a choice between red or off-white. The cardboard boxes are a little damaged from age,  particularly the red and both have an F written on the box by the shop. There are 5 monograms each box. There are also a few additional white letters which can be purchased separately. The letters are mounted on aper with elegant script, there is foxing and traces of age on each letter.
 
The boxes measure 3.5" by 3"