Sold in 72 minutes means it was too cheap. Looks in quite good condition. Notwithstanding the views of certain members of this community, I think this is reasonable evidence that an 853 Explosif frame is worth more like £150 than £125 (he said, having bought a complete bike 853 Explosif for £200 earlier this year).
Not that I would ever sell it of course, as they say on Antiques Roadshow.