Hi @Michel have you looked at my posts above? I have tried to answer your dating question for the others. For example, presscall’s stove dates from 1928: Best Regards, Kerophile.
I have an answer from my friend Serge He own 3 54M stoves : 1928,1929 and 1934 therefore 1934 is the last produced........ for the moment
Well remembered Kerophile, as always. Saves me rummaging for the stove to answer Michel. I’d already provided the answer!