Ivan,
The example which you have listed in the classifieds is a TYPE B2. The characteristics of it show a dagger that was manufactured during the end of edged weapon production, 40-41ish time frame. It has the following components for an M36 made during that time period:
Steel TYPE B chain
Machine stamped SS proof mark
Plated fittings, both scabbard and dagger
Aluminum grip eagle
Copper SS runes
