I think it is an older model possibly 20 yrs. old 4 thread serger with the thread holder missing. You can buy a thread holder off ebay or possibly find some gadgets to make a thread holder. The sergers with the thread adjusting knobs work great, I think. If it has several places with small eyes to thread, three routes with bent hooks for each plus the needle, under the flap that opens on the front where the knife is located , it most likely is a serger. Kinda hard to thread in the right places to work properly, but once done,
take different colored permanent markers and mark the thread routes for the different spools. missbelle