Vintage Sterling Brooch

[J-dude]

Picked up the filigree brooch at a yard sale for $5!!! Only thing Im not sure of is the backwards "S" on the "Sterling" mark. Anyone ever see the backwards "S" before? Any information would be great! Thanks

[GibH]

The n in "Made in Mexico" looks backward as well (or updside down). The S actually looks like an upside down 2 to me.