Recognize This Ball Light?

[Avanti]

I've seen these chrome bubble lens ball lights pop up from time to time but was never able to identify the brand. Anyone know what firm (i.e. Delta, Seiss, Miller, etc.) made these?

 

[Avanti]

I noticed that the switch is similar to ones found on 50's era Seiss ball lights but there is no brand name (not even a "Made In The USA").

 

[rodeo1988]

Delta china

 

[Avanti]

Delta china

Actually I just got confirmation from a collector that these lights were manufactured by Delta - though never stamped. They made a brief appearance in the early 1950's and were offered in both standard and reflex versions - both battery powered. I found images of a reflex version in green and was able to compare the internals to an earlier Delta Reflex Models #A2225 / A2229 (see images below). Apparently, the light was never offered as an option on any production bicycle.

Delta Reflex version...