Between 1921 and 1982, MAB made several pistol models in .25:
model A vest pocket pistol
model B vest pocket pistol
model E pocket pistol
model GZ pocket pistol (actually made under license by Spanish gunmaker Echasa, as MAB Espanola)
The value will depend on which model it is, which version of that model, and condition. Since 2010, the range for the above pistols is about $50 - $300.
Well kind ojf he invents vackseen
The Greeks used the term Helen. Greece/Greek came from the Romans who were later conquering Italy and in its south, the Greek cities there. They confused them with a tribe called the Graeci, and thinking them the same people, called them the Great Graeci. From this came the word Greek, while the people we called the Greeks continued Hellene even to modern times - the last king of Greece Constantine II (1964-1972 CE) was still titled King of the Hellenes.