Wellllll, actually you won't be able to really behold it before tomorrow or maybe Thursday when I will post better pictures (these are still from the auction). Suffice it to say, it is in mint condition, hardly any yellowing at all. I have been hunting for a blue Alps board for the better part of a year now, acquiring around four white Alps boards and a yellow Mitsumi in the process (damn sellers refusing to pop keycaps...).
Finally, I found this up for auction on German eBay. Wrote to the seller asking what his 'buy now' price was before anyone placed a bid and he put it up for 10€!! I was somewhat confused whether this was actually an FK-555 as there was no clear written indication on the board and as there are some other boards with similar cases but Num Lock being the center LED as well as the blue and green legends on Ctrl / Alt convinced me to try my luck, of which it now seems I had plenty.
So far, I'm not really sold on these blue Alps being dramatically superior to the whites or blacks I've tried. They are very, very clicky to be sure! I guess I'll need more time to get into them.
Here is the strange thing: When I connect the board via PS/2 with a DIN to PS/2 connector, it has such a high key repeat rate or something that I get repeat characters in just about every word I type. When I tried Soarer's XT/AT adapter, that problem went away but the numpad and some other non-alpha keys sent the wrong codes. The only way I can use it is with a regular, cheap PS/2 to USB adapter, which is fine, of course. Has anyone else come across this key-repeat problem, perhaps with other boards.
Anyway, I'm a very happy little pig right now, typing away on this monster of a keyboard (almost as massive as my Model F)...
By the way, does anyone agree that black DIN cables are probably the most reliable easy-to-spot indicator that a vintage keyboard is worth having?