I was intrigued that it doesn't have ALAN on the seat stays or any markings on the lugs, which is why I suggested one made for Donnay. I also noticed that the carbon weave looks different to other pictures of ALANs I've seen.
Lots of pictures of a British Eagle here, including a shot of under the bottom bracket to compare to the ALAN one:
http://www.retrobike.co.uk/forum/viewtopic.php?t=174151
and interesting that it has much the same 105 kit on it as this one.
Also info on the different carbon weaves here:
http://www.retrobike.co.uk/forum/viewtopic.php?t=205105
"Mine was 'made in Belgium' but uses the same lugs as the Alan Record Carbonio but with different weave tubes on at least the surface. A.R.C seems to use bi-directional weave on its outer layer where the Donnay and yours from the pics i can see use uni."
One last thing: all the pictures of Donnays and British Eagles (and some versions of the ALAN) have three cable guides on the top tube; this one appears to be missing the central one. Could have just come off at some point (I guess they're glued on), or does it suggests it is different again?
Edit: this B.E. has two, just the same:
https://www.facebook.com/media/set/?set ... amp;type=1
so I'm definitely veering more towards British Eagle now.
All very interesting, but I guess the bottom line is whether the sale values of the different frames (ALAN, Donnay, British Eagle, ...) are significantly different. Anybody have an opinion on that?
Nick