The problem with the OP's bike, is it looks like it has parts from multiple manufacturers. Early Moby's used those engine covers, Peugeot (and others) made mixte bike frames with the swoop tail, the rear rack and fender struts appear on different bikes, sprockets match multiple bikes, forks on this bike are bicycle style, not triple tree, etc...
There's not that single identifiable piece that makes you go, "oh! That's it!"
Add to that the hundreds of tiny, obscure manufacturers at that time, and we may never pin it down. For all we know it's changed hands many times over the years and parts were replaced with whatever was laying around, and this is how she sits now. Lonely, ugly, and mysterious.