There are many backstamps on the backs of golly badges. i will list most of them that I am aware of. I will update the rest as I remember or if anyone tells me which ones I have forgotten.
Pattorini This is not a badge manufacturer but FATTORINI is. That is because the writing is so small it is very hard to work out if its a letter p or a f.
Sometimes some of the letters are missing i.e. mill which in this case would be miller.