For sale is a nice "Focal" 2x converter for Minolta, I believe this one was manufactured in 1976. It comes with Minolta end caps front and back, including nice black case with green felt lining, very little wear. Can email pics to serious party. Will also trade toward Mamiya 645 tele converter.
I'm asking $20 plus shipping, about $5. US sale.
Paypal or USPS MO ok.