Manburg,
Nice, 6105-811? 0 or 9? Anyway what is the difference?
The 6105 (earlier or later models) and the 4S15 (SCFF001) are on my list of to get Seikos.
Hobbit,
A 6105 came with a few variations - 8000, 8009 and 8110, 8119.
The first two's case were symmetrical cushion, whilst the last two were asymmetrical, which was the later version.
I would prefer either the 8110 or 8119, not only because of the larger cushion case, but also because of the B movement (as opposed to the earlier one, i.e. A).
Having said that, I'd have to say that in view of the rarity of this species now, I'm happy to have any one of the variations.