100% original Marshall 6100 with its footswitch, soft cover, owner's manual and flight case.
 
This model, offering three distinct channels with a variety of settings, was only produced in 1992 to celebrate Marshall's 30th anniversary. It is the special edition with a blue/indigo tolex-covered case.

The chassis has oxidised over time, as the photos show, but there's nothing else to mention about this amp, which has never been modified and works perfectly well.
The amp is on consignment, has not been serviced recently and is sold ‘as is’.