Bolt handle appears to me as the standard FN commercial action of the early fifties. The only thing I can't see is, is the underside of the knob flat and checkered with fine checkering. Only other thing that looks different to me is it looks like it has a military/commercial Mauser safety lever and the FN's I have bought during that period all had a low safety on left side to clear the scope. That was the standard rich guys action when I was in Gunsmith school. Most of us used Militaries.