Big Norm,
The one with the â??reverse 3â? is the Russian extractor. It is the frame safety marking that is the same on both the Bulgarian and Russian Lugers. The frame inscription is in Bulgarian, therefore is meaningless in Russian (although I have heard that prior to 1920 the Cyrillic alphabet was the same for Russian and Bulgarian, so perhaps the safety marking would be the same). The interesting thing about these â??safetyâ? markings is that unlike other Lugers that are really on safe when the marking is showing, it is the reverse situation on the Russian and Bulgarian Luger since the marking means â??fireâ? and it is only on â??safeâ? when the marking is covered!
There are extractors other than the ones on your list, some marked the same and some different. The language of Brazil is Portuguese so the Brazilian contract Lugers are also marked CARREGADA. The language of Bolivia on the other hand is Spanish so the Bolivian extractors are marked CARGADO.
The Dutch extractors are marked GELADEN, just like German Lugers, but the extractor is marked on both sides. â??RUSTâ? is the safety marking.
The French Luger posted by Olivier is indeed rare as the author of the book stated. It is a 1903 transitional Luger and only 50 of them were produced. The CHARG?? marked extractor is unique to this variation, as the later 1906 French Commercials were taken from regular commercial production and the extractors are marked GELADEN.
Except for the Turkish model, I am very fortunate to have examples of all of these extractors. The really neat part is, they are still in the Lugers.