Need help figuring out what this TA crankset is.



Looks like a mix between a TA Cycletouriste and a Randonneur

http://www.classiclightweights.co.uk...chainring8.jpg
http://www.classiclightweights.co.uk...chainring9.jpg

Looks like it has the 50.4mm bcd (5 "arm") crank arm attachment

The inner (smallest) ring seems to be on the 80mm bcd holes attached to the outer ring...

But the middle chrainring appears to be not on the 80 bcd holes but something larger... 122mm bcd maybe?

I didn't know there was such a configuration. As I thought on the Cycetouriste all the rings sat on one bolt hole.
I guess the big chainring looks like a Stronglight model 49 ring, but it has the 80mm bcd holes to attach the small inner.
http://www.classiclightweights.co.uk...line-comp.html

Any idea of what I have here? Thanks in advance!