Martin Tungevaag: Vidorra
It's a Yamaha trailie of some description (or was) , CT? DT? Who knows?
Honda XL 125? No, XL125's had a single downtube frame, that's got twin downtubes, it's possibly an XL100 but because it's got a silver frame it's most likely an SL100 or SL125.
From around 1970-71? I think the SL 100 had single instrument speedometer like pictured and the SL125 had a Tach and Speedo side by side. Also think the SL125 front fender had more taper and the 100 was square ended like this...that was a long time ago but as I recall.