_DH_

@LEGO Historianand here I am 10 years later: some time after your post, some folks found in Norway the 309/1309 set with the light clear brick and cables. In the other news: 309/1309 glued set with the light was found in a museum, but sold once the later closed. Or at least that's what I found on the topic, sadly still cannot find a clear statement on the 1762 year brick.. dissapointing..