This is a new reproduction lot of ten (10) upholstery screws. These are new modern zinc plated reproductions.  We came up with ten because that is how many one front seat requires. I have both an NOS MB and M38 front seat I have counted and they are both 10 on the back rest. Some later models may have 12 but this set has 10 pcs. QTM Parts 

Yes, We combine shipping.