This is a knife bayonet used from the period of about 1924 into and through WWII; it was designed to fit the Czech version of the K98 German Mauser. These bayonets were exported to South America and other regions, such as Syria.
There are a number of bayonet variants, including short, long, and shortened long versions.
All models have wood grips (with attaching variations), steel pommel, crossguard, and blade.
The scabbard is of blued sheet-rolled-steel. The oval-shaped frog (aka throg) stud on the scabbard indicates this bayonet was probably exported to a South American country; perhaps Colombia.

These bayonets will fit any number of export Mauser variants.