Did Chevy make the SS wheel covers in 15 like in this e-Bay ad?

http://cgi.ebay.com/ebaymotors/2-Vintage-1964-CHEVY-IMPALA-SS-15-Metal-Hub-Caps_W0QQitemZ110435363202QQcmdZViewItemQQptZMotor s_Car_Truck_Parts_Accessories?hash=item19b675e982&_trksid=p4506.c0.m245

Thank you,
Jeff

I believe they were 14 inch.

That's what I thought.. Thanks Ryan...