Chartreuse Monark Train shell w/ box

[prewarmachine]

Believed to be a NOS part, but I think the last owner painted it. Very presentable paint with just some minor imperfections and shelf wear.
Box says part D-290 I and the shell itself has D-2890. I'm only assuming the box is for this shell, as that's how I got it.
Feel free to ask any questions

 

[SuperMonark]

90

 

[prewarmachine]

Thank you for the strong start. Not too far apart, but no deal just yet.

 

[Metalbender]

That would cool mounted to a TT helmet...Rocketeer style...great piece!