105 coupe identification

[Ben Dixon <Ben@domain.elided>]

noone responded to my previous post, so Ill try again.  Can anyone tell me
what this car is :

Chassis# AR1290977
Engine# AR0053021893

its a 105 series coupe of some sort with the stepped bonnet, possibly a
1600, or
maybe a Junior.  its rusty, but otherwise very original.  It is
twin-webberized, with the old-style alloy over the cam-cover airbox.  from
the tag on the window, it was last registered in 1991.  

cheers,

Ben

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