[taylorted52]

Need some help. Looking to buy a HO lionel loco. Found one with polar express cars that claimed it was ho gauge. The bottom of engine (steam) reads 21516GL..on the side it says 1225. I saw a G gauge advertised with the same number so how can I tell what gauge it is ? help please. Thanks Ted

 

[34C]

I just put 'Lionel 21516GL' in Google and got this link.
The Polar Express™ Ready-to-Play Set

In short it appears to be G gauge, but a battery powered novelty item not compatible with regular G gauge.