This time I'm offering an excellent Kanayama piece with a great trail of custody and appreciation: ex Mariusz, ex Jim Gilbert collection (see http://home.earthlin...rt/kanayama.htm). This is a text-book example, small in diameter with thick rim, dished plate and lumpy tekkotsu. The colour is blackish and the surface looks wet and lustrous, typical for Kanayama and Owari sukashi tsuba.
Thickness (nakago ana): 4mm
Thickness (rim): 6mm
$1,850 including shipping, PayPal extra
You may find more hi-res photos here: