Welcome Mike. They're not all Americans on here - in fact the site is run by Aussies and there are a fair few Brits on here too. I'm from London.
Firstly, let me say "Don't give up on your Dad's watch. It sounds like it is well overdue a service. As to your choices, I have to say that I have a great affinity for the 861 - it is a good work-horse chronograph movement. £1,000 (ish) would be a reasonable price but you will need to get it serviced and that would cost £300 to £400 as long as it doesn't need any expensive parts. So, despite the green strap, that would be my choice, but maybe the one at $1,200 might be a better bet to allow you more for the service. Feel free to post details or send me a PM and I'll give you my opinion.
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