You should be able to get the cover plate and a spool pin from a local sewing shop, if not they can be ordered online. I think I paid about $6 for my plate. It is the same plate used on 66, 99, 192 and the 185. The reason they get lost is people get them off, but don't know the trick to getting them back on. You have to put them on from back to front. Once you know how, it is easy. Hope you find all the parts you need to get sewing. It is a really fun little machine.
Pat