Yes it does look quite close to the falken but the falken has no rivet holes on the head tube where as this bike does clearly from what the owner said with the rivet holes being there this makes it a puch which makes it super rare and worth quite a bit but also the one in the bmx museum could also be a puch because the small gusset on a falken had no holes where as it was a defining feature of puch a small gusset with three holes
the falcons have rivet holes,as to hold the riveted head badges on!!
look at dog temples frame.the small 3 holed gusset has an unwelded part,where as the puch's is welded all around the gusset.
check the falcon theta on the link i posted compared to the puch's link.
i did think it was a track invader,but now im thinking its a falcon thetahttp://www.ebay.co.uk/itm/Falcon-Pro-Th ... true&rt=nc
by the way,i posted those puch pics to you over at rad!!