Nice 6309 Glenn and as original as you will find - well done. If I didn't have one already you would have paid more for it!
All you need now is a case holder, a Jaxa type caseback remover, dial protector, hands remover (I use the Presto type), hands reseters, pegwood, rodico, ultrasonic bath, silicone grease and a oring greaser. You have the screwdrivers!
A good clean, possibly a replacement set of hands (keep the originals), and gaskets, a bracelet or Z22 to wear it on and your done.
Don't wear it on the GL831, keep that for photo shoots!
PS. He only lives just up the road from me, had I won I was going to drive over and collect it and check out his story