Anyone know what brand chain this is?

[DryDocked]

I purchased a used Stihl 026 a while back and I'm trying to figure out the brand chain that's on it, there's no manufacturer's name anywhere. There aren't any markings at all on the cutters, the drive links have 63J on the tangs (indicating the gauge) and the tie straps have SW on one side and XI on the other. Or I could be reading that upside down in which case it would be MS and IX. Any ideas? Thanks.

Joe

 

[cuttinscott]

Sounds like Sandvik/Windsor 63J
.325", .063" semi chisel
uses 3/16" file

Scott