The H wheel that is the sought after one (for the A12 guys) is the 15 x 6 JJ. That 15 x 6 JJ will be stamped on the outer rim hoop where the tire will cover it. The tire must be removed to see it. It will also have a large H stamped in the flat between the lug holes at the eight o'clock position, when the wheel is placed with the valve stem hole at the 12 o'clock position. The 1969 H wheels don't have part number or pentastar stamped into them, but will have the manufacturer code, date, and 6.0 stamp near the valve stem hole - designating the 6 inch wheel width.

Chrysler had later 15 x 6.5 "H" wheels up through the mid 70s, but the H stamping is much smaller. These later wheels will have the Pentastar, part number, manufacturer code, and date code stamped near the valve stem hole.

Hope this helps.