Thanks for this Louis, very interesting!

I have a Mannlicher from Chas. A Heyer & Co:

http://forums.nitroexpress.com/showflat.php?Cat=0&Number=211610&page=0&fpart=1&vc=1

It seems to be very similar to the one sold at gunauction.com above with its long barrel, but I can't see the pictures on that site unfortunately.

/C