In addition to the above, the "7" denotes it was made in a year ending in 7, thus 1967 or 1977, both too far away from 1969-71, when most "large H" stamped wheels were used. I don't believe Mopar steel wheels made prior to 1969 had flat areas between the lug holes...most had bumps. At least, the 1968 Hemi cars were that way. If it has a small H stamped between the lug holes, then it's a later H wheel, most likely from 1977.