^Thank you, gents
~~~
Now that I've had it long enough for valid accuracy checks, I thought I'd jot down my notes.
First off, my sample is amazingly accurate when worn and when stored crown-down. I'm talking -1/+4 daily. That's assuming >40% PR
(i.e. winding it daily).
I can work with this combination so as far as I'm concerned,
it's all good 
Having said that... the 1863 starts to lose accuracy
dramatically as the PR approaches 0. At roughly 25% PR, I'm looking at -5 and at 5%, -15. While there's no reason to run it down that low, I have to say it's the worst of all my watches, incl. my 48hrs automatics
(my Rolex 16600, for example).
Finally, storing it in any position other than crown-down also results in dramatic accuracy loss, this time in the opposite direction. For example, I've noted variances of up to +12/day when placing it in crown up, dial up, etc.
Speedmaster FTW!
