Same opinion, unfortunally the S/155 G is wout scabbard, but the condition here is ok, well used, with remains of blue on blade, and worried off on handle, looks like blade should be oiled.
The S/177K also Pack from 1934 would be more scarce, unfortunally not in period condition, the scabbard was force matched probably by germans, the alu grips are typical for postwar owner, are replacements, normally there should be wood grips. The blade was too cleaned visible on scratches along the edge, same as some rust areas.