Originally Posted by Happy Feet

Here's my mid 80's Maruishi MT-5, which was touted as a mountain bike.
No brazing for a front derailer cable (and no derailer) yet somehow it wound up with a double ring crankset. Sugino No 66 with date stamp for 83. Rear derailer by Suntour with ZD date stamp which is Apr 83.
I've seen other photo's on the net and it appears those are original handle bars (or quite the coincidence as they also have the same stem).

Question: Does it seem realistic that it could come with a double crank set yet no derailer? There are no marks on the frame where one may have been. I added one for a while by DIYing a cable stop for the guide but took it off and just move the chain with my foot when I need to. I was thinking of replacing it with a single ring to make it more period correct but now wonder if that's the way it came?