The ones on that gold wagon you pictured are named "Virgo" and are a 15" alloy rim, originally available on 242GT and 240 Turbo. They're good-looking wheels, however, they have 200 series offset (slightly different than that for 700 series) and the way the interior is shaped, they don't fit over the large brake calipers on *early* 700 series (1983 and possibly some 1984), or on later 700's with ABS. However, if you have a middle-year 760, they may fit fine and they look good. Also, these are especially soft wheels and prone to bending, so it can be hard to find a good set -- and since they feature exposed lugs in deep wells, Volvo originally paired them with special extended chromed lug nuts, which are how they look and work best but can also be tricky to find.
The second wheel in the two in your post above is called "Draco" and is stock on 740 turbo 1986-1989 and 1991. They look good on 700 series, fit over all the brake options, and are easy to find, easy to clean, and less prone to damage than the Virgos. Good option all around.
My personal favorite is called "Sirius" and is a 10-spoke 15" alloy, looks like this:
They come in two flavors, a machined-finish style that came on 1983 and some 1984 760's and used a chrome center cap (as pictured), and a later lacquer-finish version used with a silver plastic cap on 1985 740 Turbo only. The set I have on my wagon is the early 760 type. They're hard to find, but they're lightweight, strong, and look nice.
