Spotted...

My first D.A.S aimed at me and i'm stationary at red lights. Not fair, feel like i've lost my virginity to a crap one night stand. Well hello Mr. purple Brian Rourke with rear saddle bottle cages and an afro (rider not bike) in Camden / Regents Park. Next time ill actually change my facial expression to one of vague excitement and not 'wtf-just-happened' look.

Oh herro! I don't remember, but then I'm a total DAS whore.

Now picturing a bike with a very comfortable saddle.
Na, it's one of those clamp rails that hook behind the seat rails. With armatures extending rearwards, those with vertical cage mounts on the end. No brazeonz innit blud.

It's an original 1980 model Selle Italia Turbo with low mileage, so make what you will.