They are early Recaro fiberglass buckets from the late 60's / early 70's and look to be in decent shape.
I have an original set in my car right now and they are a bit of a smaller fit, but look really cool. That said, they are 30yr old fiberglass parts. These were sold as competiton seats and may have been the subject of various stresses and fatigue - at this point any 30yr old seat may require some reinforcing or repair.
I believe that vintage seats make a copy of these for about $1100 / seat
www.vintageseats.com
Regards,
Andrew M