||Scratched on the top of the object (on the case)
overall: 4 1/2 in x 1 1/4 in x 1 1/4 in
The object is an 8-pin circuit module with metal case, possibly from the LARC computer. There are 2 round holes in the top of the case and 4 in the bottom.
Gift of Lawrence Livermore National Laboratory (LLNL)