They should be mid 80's models, the precursor to the V30. There's a date code in an alphanumeric # series on the speaker frame. Can you see it? If so, you can date them at https://www.bygonetones.com/celestion-date-codes.html
Those Marshall 52 mosfet series amps are actually pretty good sounding you might be surprised by it. They are as good as old Randall IMHO. I used to own used the shit of a 5275 1x12 combo amp and exclusively used it for jams and shows during college instead of my halfstack 100 watter and it would keep up no problem. Great amps!
Run, and get it. Those speakers are friggin amazing. Like a 65 mixed with a V30 imo. Big tight lows of a V30 with great mids and highs; not grating like V30s can sometimes be.
AFAIK the 8 ohm Marshall Vintages will always be from the 80s. I’ve never seen any from the 90s or later.