John S - I saw you posting in another section, and I was going to add there that even 'ordinary' Martin Magna alto's don't come up for sale that often (if you get a good one you tend to keep it...).
So, as milandro says, ones with a silver neck - unless you have a specific seller in mind - might just come along once in a buying lifetime. I've never, ever, regretted buying my normal 'cooking' Magna alto

ages ago from a London dealer with a choice at that time of underslung Conns, avoidable Mk VI's, even a King or two, but only one Magna (with n/s keys...) alto in the rack.
And, as far as I know, he's not had another Magna since - mind you, I wish I'd taken out a big loan and bought the LOT. Hindsight is a truly wonderful thing
