After reading through the debate if found this from Gene, which is a start. I couldn't copy and paste Jims reply about Borland making chips after these dates.

Lost in the shuffle is a comment that someone who made the chips for Borland, confirmed that he did the coin alignment when hot stamping them.

Gene wrote:

Facts that I believe I can prove.
The 1st Nevada mold chip was made in 1965 for the Nevada Dice Co.
The 1st Diecar mold chips was made in 1971 or 72 for the Nevada Dice Co.
All Nevada and Diecar molded chips were made at the Burt Co pre 1981 and distributed by Bud Jones.
Bud Jones stopped distributing the 2 molds in 1980 or 81 and sold the rights to the molds to our friend Borland in 1987 or 88.
All Nevada and Diecar molded chips after 1988 were made at Atlantic Standard and shipped to Bill Borland.
Any casino that closed pre 1965 can not have a Nevada mold chip.
Any casino that closed pre 1972 can not have a Diecar mold chip.
I suggest that anyone that doubts the above, talk to Bud Jones and Jim Blanchard.

This isn't the end, just partial information.