I haven't seen one like this go for sometime so prices might have jumped a bit, 100k + 150e or so imo. Not many rare things in game anymore so collectors are willing to pay a lot.
Yeah, Req. 7's have def +++++. My thoughts before were 100k+100-120e though. Still, these are rare enough to command your own price and collectors will probably follow, so try out for 100k+150e.
one sold a week or two ago...friend of mine bought for +150e because he really wanted..as for a normal auction with no one super interested, i would say +130e or so.