Another Cab/Speaker Dating Question

[autopilot]

speakers are celestion g12t-75.
the code on the metal frame of the speakers is 0980T5781/05 i think...
but it might say 09BDT3781/05...
the cones said 1777.

the cabinet has black metal handles.
the serial number is written on the back plate #552 with marker or something.

my guess is this is a 90s cab, but i'm not an expert. is that also the date of the speakers?

also, while you are looking, is the rear plastic connector panel a replaceable part? mine is cracked at each corner.

thanks,
-rich.

[autopilot]

based on this info, are the speakers a Feb 09, 1994 date code?
the cab would also correspond with the 1994 production flyer, so that would make sense.

i've always liked the sound of this cab.
are other speakers preferred?