There is article in Numista catalog about bare head type 1852-1857
https://en.numista.com/catalogue/pieces320.html
It states in the year distribution that there are
1. Coin 1852E
2. Coin 1853A Eagle privy mark
At the same time no references to them are mentioned in SCWC and Le Franc by Stéphane Desrousseaux, Michel Prieur, Laurent Schmitt (Les Chevau-légers)
Of course these catalogs are not comprehensive and do not oblige the mention all known coins still, is it possible to add the images or at least the references to the coins in question?
Next question to the year distribution table for 1853K and 1855K.
3. There are statements about a vertical leaf or frond (feuille verticale)
Could we make translation into English of the term 'feuille verticale'? Unfortunately, the images in my possession does not permit me to identify this privy mark of engravers general properly. Then it will be possible to substitute the lines in English version as
instead of
1853 K (fr) KM#771.5 feuille verticale
1853 K 1,203,400 KM#771.5 Bordeaux Mint
...
1855 K (fr) ancre - km# 771.5 - feuille verticale
1855 K 8,046,364 KM#771.5 Bordeaux Mint (Anchor privy mark)
1855 K KM#771.5 Bordeaux Mint (Dog privy mark)
something like
1853 K KM#771.5 (Vertical [Term for feuille] privy mark)
1853 K 1,203,400 KM#771.5 Bordeaux Mint (Horizontal [term for feuille] privy mark)
...
1855 K KM#771.5 Bordeaux Mint (Anchor vertical [term for feuille] privy marks)
1855 K 8,046,364 KM#771.5 Bordeaux Mint (Anchor horizontal [term for feuille] privy marks)
1855 K KM#771.5 Bordeaux Mint (Dog horizontal [term for feuille] privy marks)
Right now it is difficult to catch for a reader, where this 'feuille verticale' is situated even.