Looking or new chrome battery cap

[cvdet]

I have Torpedo VVV Aka Lava Tube im looking to replace the battery cap on it but seem to be having a hard time finding a new one any one have any suggestions where to start looking.

 

[BWhare]

Knight Rider End Cap/Lava Tube Works on Both Knight Rider and Knight Rider Mini

Doesn't look like it's chrome, but it's a place to start...