OK, fellow diecast helicopter collector enthusiasts...
I purchased this small cast Sikorsky S-58 some time ago. The detail is pretty nice, and it is about 1.5 inches long and about 1 inch tall.
It is a single cast, and the material actually seems like lead to me - could that be correct?
I do not think the main rotor is original. The small brass tail rotor does appear original.
I have no idea of the manufacturer - does anyone know?