@th is that the underside under a microscope without decapping? it's so pretty. is it a common issue for the bond wires to have detached over time?
@fbz this soviet-era SRAM chip was selected for its easy-to-remove metal cover so that the die can be exposed to light. it's as old as I am and of unknown provenance, so I was worried about possible mechanical failures.
@th gotcha. very cool.