I have 2 differnt sets of spirit arms
The patch on the right arms are differnt.

Arm set no.1;Small pacth logo, the end that goes into the shoulder socket is pointed.

Arm set no.2;Pacth logo is large, the end that goes into the shoulder socket is rounded(like early figures)

I dont think my camera will take pics of things this small, but I would send the arms to someone that can( as long as I get them back :) )