WTT 7mm Mauser Go Gauge

I have a brand new, never used 257 bob/7mm Mauser "go" gauge that I would like to trade for a 270/30-06 "go" gauge. I don't mind if it's been used, as long as it's rust free and never been abused. We can pay for our own shipping. I would sell for $30 shipped in padded envelope.