While working on a club project (class 120 DMU), we got on to the subject of marker lights for DMU's. I have a Lima 117 DMU which has marker lights, and is used on my layout set in 1977, but a number of pictures I have seen show them without market lights, and "domino" dots instead in the headcode panels. My question therefore is:   1) Were there any 117's fitted with marker lights from new? 2) Does anybody have a list of when they were fitted to units, which I presume coincided with refurbi