Flip Chip W021B module
Digital Equipment Corporation (DEC)
||Printed in solder parallel to the extraction end
||Printed in solder parallel to the extraction edge
||Handwritten on the non-circuit side of the module
overall: 1/8 in x 2 1/2 in x 5 in
This W021B module has a green board with two holes in the center. On the non-circuit side there is a single round inspection stamp. There are two small rivet holes at the extraction edge.
SAP Collection, Computer History Museum