ManateeMafia, TiN, thanks for the replies!
No warranty sticker
..
I think (best guess) it was manufactured in 1994/1995 and the unit went to Fluke Washington perhaps 2 or 3 times since then; because the parts dated from 1997 are only 4 transistors in one of the PCAs, and the rest of the parts are from 1994 (70% - 80% of them).
The strange thing is that in some PCAs with most of the ICs dated from 1994 there are some Aromat relays dated from 1995 and 1996, and of course no visible sign of resoldering/repair..
I did check the display and the Allegro ICs are from 1991 (attached images), so bummer might have the original display!
DrTube