help id'ing a taillight lens?

[johnnygringo]

i'm using an artillery shell for a taillight on a motorcycle and this lens fits perfect...cept i broke it.

it'll work but a new one would rock..anybody i.d. it or know where to get one?
http://antonyl.brinkster.net/mahoney/DSC03649.JPG

http://antonyl.brinkster.net/mahoney/DSC03650.JPG

[Mike]

That looks like it might be from some kind of truck marker/running light. You might check truck accessory places, truck stops or places that sell vehicle safety lighting.

Or, maybe bicycle?

Just guessing.