indicator lenses needed

[7Westfield]

Does anyone know what the "flat" style Lucas lens was used on?

I'm referring to one that fits on the same base as the beehive lens, like on a bugeye sprite

Somewhere, I've seen some that only protrude about 1/2"

Were they a Landy item?

 

edit...red ones are available for XK-120, but I want amber