This Heathkit SB-220 HF Linear Amplifier covers 10-80 Meters and has New Taylor Graphite Tubes.
This Amplifier was evaluated by Jim Millsap W9CTO.
He installed a set of Taylor Graphite tubes that were basically new except for a few time he used them to check other amplifiers.
Jim Tested this amp on all bands and he cleaned the switches and contacts.
This SB-220 is super clean inside and out and there are no bad marks or scratches.
I will provide a reproduction of the manual.