Locomotive headlight 484 numberboards / Ebay

I noticed a set of 484 glass locomotive headlight numberboards on Ebay today while browsing thru RR items. Ebay # 141293727904. The seller say's he aquired them with some other NYC RR items and he lives in Washington State. I know nothing about what kind of or size headlight numberboards are on the D&RGW K36's but it got me wondering if maybe they could be a older set from that loco? He list's the size of them as being 18" x 6.5". The way items travel around the country you never know where things sometimes end up!

I own a few other Eastern RR loco headlight numberboard sets but the ones i have the glass measures 11.5" x 5.5" and they will fit the side numberboard holders on both a 12" diameter Pyle National headlight and a 14" diameter Golden Glow headlight that i have. These Ebay ones being 18" x 6.5" and being larger i'm not sure what type headlight they would have been used on or what RR?