Old or new?

[Philip]

I post this one only to note the decorative filework on the edge of the frizzen spring, in comparison to that on the pistol under consideration.

(The typology of this lock has no bearing on the essence of this thread as it is a different breed of cat, similar origin as the above, but a separate style called fecho de três parafusos in Portuguese. Again, a sort of hybrid, having the external form of an earlier type called fecho de molinhas with the innards of a French flintlock sans half cock detent on the tumbler.)