HO Scale PRR Standard Whistle Sign
HO scale sign
These signs were a standard cast iron design created to tell traincrews to blow approach signals ahead of stations and crossings.
I printed these on a FDM printer, though I would suggest using a resin printer for the best fidelity as the lettering is very small.
The regular one is better on regular printers while the one with the back detail comes in groups of 6 and is ideal for resin.
Thanks, John