Completely different animal actually. The Vintage and Classic Tube series were precursors to the current Classic series. A lot of them had solid state preamps and beefy tube output sections. Townshend used a Vintage 410 in the studio to record Face Dances and Rough Mix.
I used to own a classic 50 4X10. Great amp, loud as hell. Drive channel was a little "meh" but I prefer pedals for drive. $300? If I were in the market for a used amp, I'd pay $300 and not even haggle.