Repunched Dates

[cnladue]

does that include the mint mark also?

cause i have so many 68, 69,70 s that are so different from high huge to low and micro size.

[wavysteps]

No, we are very sure that the mint marks were punched into the working dies (it would have been to time consuming to engrave mint marks into thousands of working dies per year) until 1989. As to punching in the mint mark after that (in the year 1990 to the present), we assumed that it was punched into the master die.

BJ Neff

[diamond]

cause i have so many 68, 69,70 s that are so different from high huge to low and micro size.

I don't know if there was more than one mintmark style used for the San Francisco mintmark in these years. If there was, that might account for some of the variation you're seeing. But even if there was only one style, the appearance of mintmarks will vary. Die deterioration can make a mintmark appear larger and less well-defined. Die abrasion ("polishing") can make a mintmark appear thinner and smaller. The depth of the punch can also theoretically vary. A shallow punch will produce a smaller, thinner mintmark. If the punch entered the die face at a slight angle, that will also affect the appearance.

[cnladue]

i vote for in graving

i have dozens of mm from late 60s that are so uniquely placed and slanted or crooked , it seems to me a punching device would limit much of that..

[diamond]

There is no "punching device". It's just a hand-held punch that's given a tap by a hammer wielded by the mint technician.