Bolt-on Center caps?

[Ayeobe]

Aformentioned Center caps (http://www.ebay.com/itm/HONDA-THREE-VINTAGE-CENTER-CAPS-7-DIA-/270842284379?pt=Motors_Car_Truck_Parts_Accessories&hash=item3f0f75495b&vxp=mtr)

What are these?! I want some on my car, but i dont know if they'd fit, or for that matter, where i'd find a 4th one Lol.. Any of you guys seen these before? I didnt have the slightest clue they even exsisted.

EDIT: Found an ad that actually said what car it came off of,

http://files.conceptcarz.com/img/Honda/82-Honda-Prelude_DV-09-PVGP-002.jpg

Now, i wonder if they'll fit?

[A20A1]

http://www.ebay.com/itm/1979-80-81-1982-HONDA-PRELUDE-WHEEL-CENTRE-CENTER-CAP-/390204103485

http://www.ebay.com/itm/1979-1980-HONDA-PRELUDE-POLISHED-STAINLESS-STEEL-WHEEL-CENTER-CAP-HUB-COVER-/310368793712

[Ayeobe]

Those are even more oldschool than the ones i saw.. I think they fit, the bolt pattern seems to be 4x100 for those 'ludes, too, but i have to check the diamiter of my inner wheel..

[A20A1]

http://www.ebay.com/itm/1979-80-81-1982-HONDA-PRELUDE-WHEEL-CENTRE-CENTER-CAP-/eBayISAPI.dll?ViewItem&item=310018222807
This ad lists the size of the caps

I'm looking at my rims in my sig and wonder if I could have used those on my car. :(