My Decca London was perhaps the twin of yours, and made about the same time. Blue case or grey? The latter was the Export model, selected for response from the regular run. Very different technology, quite interesting: no cantilever, stylus assembly kept under tension by a string, conical stylus... ) I ran mine in a Decca International arm, a damped unipivot. Since the cartridge has no internal damping, the arm has to supply it. Very lively and dynamic sound, tracking not great but OK for most cuts. IMO worth retipping if the price is right, but I doubt that I would use it in my main system (LP12 Lingo, rewired RB300, Cardas Heart, Klyne SK-5A) today.
