I found these at a local antique store. Those marked with an asterisk means that I have a trader. The "DTS" is also "STD" on the reverse.

TGT identifies "TDS"/"STD". The "UB" may look like it has a large "X" going through the hot stamp, but that is an optical illusion of the scanner. There are concentric circles on the surface of the chip (like a record), which caused this.

Any ideas where any of these are from?

Thanks for looking,

Jim Follis