I know this is swedish but when is it from? Any other information on it would be appreciated.

That is a Swedish army winter cap m/1950. It was most likely used with the m/ 39 uniform as an alternative to the winter cap m/ 43. The m/ 39 uniform was later replaced by the m/ 59 (summer) and the m/ 58 (winter) uniforms. That included the winter cap m/ 59. So this was probably made sometime between 1950 and 1959.

 

The stamp says 56 (or something) which is the size and Ö.S.B. which is the manufacturer. It stands for Örebro Sport & Bil (Örebro Sports and Car).

Over that is the three crowns, which is the Swedish small national emblem.