I hope that is a starter pistol, but be careful until you know for sure. It might be heavy because the magazine and/or barrel are LOADED!
Don't point it at your face or pets or anything.
from Wikipedia"In 1926 a third version of the 6.35 calibre pocket pistol was introduced, in which the workings of the firing mechanism were completely redesigned to incorporate a disconnector similar to the one used in the 1923 model. It was a simple and economical modification, which contributed to the fame and commercial success of this automatic pistol. The innovation involved a slight modification to the left grip, and can easily be seen without the need to dismantle the gun. With these improvements the pistol can almost be considered a new model, the Model 1926. The only modifications that followed were small cosmetic changes, which for the most part involved the design and material of the grips. The name was changed, however, to become first the Model 1926-1931, and later the Model 1934. In any case these various model numbers can be found only in the Beretta catalogues. All the guns manufactured up to the mid-1930s are marked simply «BREV. 1919», and subsequent models until the end of the war are marked «Brevettata», with no further details. On similar guns produced immediately after the war we find the same «Brevettata», but more often the abbreviation." Beretta 418 - Wikipedia, the free encyclopedia
If the old clothes are a woman's clothes, be aware that the pic in Wiki very closely resembles the lil pistol in my youngest sisters purse right now, though hers is newer.
edit* "This very successful gun remained in production until the middle of the 1950s," (from the Wiki article) Makes me wonder if that lil bugger might be worth a few bucks.