It took awhile, but Athearn/Horizon finally responded. They had the part and kindly sent it without delay. Meantime, I ordered the Cal Scale brass and Precision Scale plastic equivalents and Microscale decal sheet.
You might try a Precision Scale part. Not exact for the Big Boy but they might make a decent stand-in.
https://www.ebay.com/itm/233394152375?hash=item36576023b7:g:8lEAAOSwq1ldxGCH
Or in brass:
https://www.ebay.com/itm/382993774062?hash=item592c3535ee:g:A4YAAOSw7j9c-nYA
https://www.ebay.com/itm/333898059841?hash=item4dbde01041:g:u2QAAOSwhvpgM7fr
Good Luck, Ed
Tried that, no response. Their website shows only diesel parts.
hdtvnutWonder if anyone has Athearn parts, but seems unlikely.
Seems to me that it wouldn't hurt if you took the time to contact Athearn.
Wayne
Thanks Ed. Bowser had none left, so trying others. Wonder if anyone has Athearn parts, but seems unlikely.
Hal
Cal-Scale (now Bowser) makes solid brass ones that could get you by until you can find originals.
https://www.bowser-trains.com/history/hocalscalesteam.html
Scroll to "N" part no. 190-260.
Somehow, part of a signpost from my Athearn Challenger G9122 (3985) front boiler has been lost. Google search has not helped. I need the outer curved housing and signboard/lens; parts 41 and 42. The LED is still there.
If not the original parts, I could use any signboard from a Riverrosi, brass, etc, Challenger or other UP model that looks the same, to restore the general appearance. Any suggestions appreciated. Thanks.