for NRZ/RR (National Railways of Zimbabwe/Rhodesian Railways) 4-6-4+4-6-4 15th class
at 1:24, ½" : 1ft scale for 3′ 6″, Cape gauge, on 45 mm track.
A full set consists of 16 x H421 plain wheels, 8 x H422 coupled and 4 of H423 driven wheels.
Links: Home. Casting prices and stock. Narrow gauge loco set price list. Wheel data: H421. H422, H423.
Wikipedia page
Bryn Morgan's SAR group: https://www.facebook.com/groups/225873694237866/
Full size for 103 dpi screens. Bare weight c. 2,120 gr.