for GWR 4-6-0 King class, at 7 mm/ft
The prototype driving wheel weights are surface mounted plates, and are not cast in.
Links: Home.
Casting prices and stock:
B18 . B19 .
B20.
Wheel data: B18 .
B19 . B20.
GWR loco sets price list.
Full size for 103 dpi screens. Bare weight c. 500 gr