I have designed and produced a scale-sized B&O CPL dwarf signal, built from the plans of the General Railway Signal Type VA dwarf. You can find the details on my blog here:
I am going to make these available commercially, initially as a static detail part and later (possibly much later) as a kit/assembled with the lighting components. The detail part can accept lamps, but you will have to supply them. I'm looking for sources of ultra miniature lamps now.
Before I invest significant money in designing and manufacturing a lighting board for this signal, I'd like to gauge the interest level. Here's your chance to get something done to strict 1/4 inch scale. The static signal will be about $5-6 unpainted. I cannot estimate the cost of an illuminated signal until I get estimates for the lighting board.
TT