Apologies if this is old.
S&Ms have a one way back design. In either the top-left or bottom-right corner of the design, there will be a large dot, and an extra, smaller dot. The large dot is present in all four corners, but the small one appears only in 1 corner.
There may be more, I didn't check out every detail.
S&Ms have a one way back design. In either the top-left or bottom-right corner of the design, there will be a large dot, and an extra, smaller dot. The large dot is present in all four corners, but the small one appears only in 1 corner.
There may be more, I didn't check out every detail.