I'd say that craigd and Researcher are correct in their opinion that this is concealing a stock wrist repair. Much better than the commonly seen baling wire, stove bolts, gray epoxy, nails, and wood screws, but certainly not in the same league as the original H&H metalwork.

It would be interesting to pull the locks and trigger guard to see what combination of glue, pins, dowels, rebar, etc., may be hidden underneath.

A true sign of mental illness is any gun owner who would vote for an Anti-Gunner like Joe Biden.