Many thanks to debauer for providing the samples!
(Logo) P80C592 FFA 342392 DfD9518V0 Y (M)(C) INTEL 1980 (M)(C) PHILIPS 1992
Interesting that the Philips copyright year is 1992 while maskwork says 1993.
V83C592V0 PHILIPS-RHW (Castle doodle)
(M)(C) INTEL 1980 (C)(M) PHILIPS 1993
DIETER CHRISTOPH
Top metal imaged with Nikon PlanApo 20x/0.75