IME (and with Croft gear it's extensive), what you're selling would comfortably outperform most of the modern stuff. The dual-mono DACT steppers alone would almost guarantee that!
Seriously folks, this is a superb preamp at a bargain price. Sonically, think £1.5k, minimum. Therefore, for £450 my advice would be to get your wallets out, tout-suite, before someone smarter than you beats you to it!!
Marco.