Road Cycling - weird shimano clip/clipless pedals

Hi folks,
I just won this auction on ebay:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3669690460&category=36138&sspagename=STRK%3AMEBWN%3AIT&rd=1

it's a set of shimano pedals that have clips and straps, but i think also have a little clip-less like mechanism in them. meaning, you put your foot in, and the clipless think on the sole of your shoe catches, so that when you cinch the strap, your foot cant come out backwards. is this making any sense? now, my question is, for those who know how these things work: what kind of cleats do i need for these? and i'm assuming i need road or mountain bike shoes, right?

the reason i wanted these pedals is b/c it seemed like i could ride to work in gym shoes if i wanted just using the straps, but on long road rides i'd be alble to get solidly secured to the pedal w/ the correct cleats on.

thanks for any and all help.
dan

These are not clipless pedals but simply an advanced style of toe-clip and strap pedals. They look to be like the Shimano Dura-Ace 7400 series pedals from the mid to late 1980s. I guess there was a trickle down to the 600 group as well. They did use a special cleat (PD64) to help tune positioning that mounted to a 3-hole Look pattern. If you ride with the cleats, then the shoes aren't really any more walkable than if you were using any other road-specific cleats. However, I think it's entirely possible to use regular shoes in those pedals although there's a back edge that may end up scoring into the sole of your shoes.

i used the 105 version of those pedals, for my track bike. the only problem i had with them was once, the toe clip broke (i was using plastic clips) on my way home. my only real beef with them now is that you can't put a second strap on them for the toes. i have two sets of normal platform toeclip pedals now and i run dual straps on both pairs. it makes a HUUUGE difference. the little ridge at the back usually sat just behind the balls of my feet, and THAT got a little uncomfortable at times as there isn't any support between the front piece where the clip bolts on and the back ridge. i never had a problem with them scoring my shoes. they take a little while to get used to just because it's a different design.

if you end up not liking them, and still want to go with clips and straps i reccommend the MKS sylvan track pedals, set up with two sets of straps.

Lordy!! I've got a pair of those on one of my bikes right now!! I suppose that makes me rather dated, huh? The rest of the bike is the original 6-speed Dura-Ace SIS group. You remember, the very first click-shifting? I can't recall if the pedals came with the group or I got them later. At any rate, they were the last pair of conventional pedals I owned before I bought a set of the original LOOK pedals...the white ones...