Hello Bulldogg,
You might find some info here, although they mention only 1610 and 1617 models:
http://www.rudolphbrosinc.com/ProductGuides/MF1600TeddersProductGuide.pdf
From 2016 onwards mf is selling fella hay machines unde the mf brand and colours, yours is older i guess?
It ll be difficult to find out who made your machine, are you close to it?
Sometimes the manufacturers plate has hidden indications as e.g. On same tractors made in india only a C/O Pune indicates where it comes from
Even the main manufacturers, as deutz-fahr, pottinger and kuhn had some machines made from one manufacturer for the other company, E.g. One made drum mowrs, one disc mowers and the other rotary rakes ...
Good luck
Rgds
Robert