Thanks for your message. I've not been receiving notifications of messages via the site so I thought I would edit the settings. I had obviously got it wrong. It is a little complicated.
I note your comment about the bezel and insert. I have been collecting Seiko's for over 30 years now and my main interest has always been 6309's. I own the finest 6309 I've ever owned and I did have a collection of over 20 stunning 6309's until last year. All the work on my 6309 was done by Ken Setser back in 2009. I thought about fitting an original, black Seiko Tuna insert and really don't want to spoil it by fitting an all black bezel. I did appreciate your kind offer.