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Re: Overdate die production theory
All you need to do is look at some of the overdates like the 1942/1 dime to see the previous date does not get filled in. -
Re: Overdate die production theory
never acknowledging overdates, like a 42/1, would mean forensics aren't going to satisfy you until written instructions are found. try starting with asking for the written instructions instead of proposing solutions while denying others' proposals because there is no acknowledgment -
Overdate die production theory
Theory of overdate die production. Filing down of the previous date would leave raised section on the coin for new date. No evidence of raised section above the coins field. Use of steel to fill in die. This would cause reduction of the carbon content in the tool steel as the temperature needed to melt the steel filler… -
Re: Overdate die production theory
Here is a good example of a date that the 8 was fully filled in but there is definite evidence that there is the underlying 1948 design of the 4. -
Re: Overdate die production theory
You're assuming the brazing metal was fully melted with no contamination. The 1888/7 appears to have fractured the fill metal when the 1888 date was pressed into the die. A lot of high stressed welds today are x-rayed to see if there are any imperfections. Back in 1888 the quality control was probably not so good. -
Re: Overdate die production theory
what bugs me about the braising over the old date and re-punching is that i would seem more likely the whole date would be successfully filled and the overage polished down flat before the re-punch. having a perfectly formed bottom of a 7 hiding behind an 1888 wouldn't seem a likely outcome if braised over. -
Re: Overdate die production theory
RPMs or OMMs (overmintmarks)? RPMs were simply due to the fact that a single blow was often insufficient to bring up a mint mark and there'd be misregistration between impressions. For OMMs, the modern (post-Barber) mint mark is sufficiently small that it could be sufficiently obliterated by a new mint mark punch. Unlike… -
Re: Overdate die production theory
The time period is relevant because all overdates from the years using gang punches for the date are a result of re-dating an old die, while some of those in earlier years are a result of an errant first punch. Errant first punches exist after the 1830s, typically with the first punch rotated, giving us inverted dates such… -
Re: Overdate die production theory
Just a friendly reminder: ;) https://forums.collectors.com/discussion/1119982/non-accented-hair-over-accented-hair-variety-1964-proof-half-dollar#latest -
Re: Overdate die production theory
Hello, I appreciate the feedback. I am not sure that the time period of how the dates were applied if the theory here is what was used to coverup the previous date or blunder of the date (9 over 6). I am sure that there were people who proposed how the digits were filled in. The forensic evidence that a braze was used is…
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