The Duncan sword looks in the pictures to be more or less the same
visually as the Marto sword other than possibly a better handle
material and finish. It even includes the brass ring on the Dragon's
neck. I can't quite figure why they wouldn't have reproduced the
original first season prop that was used before they went to the
Marto swords. They are adding a neat scabbard for it that is meant
to be what Duncan used to hide it in his coat.
All in all an affordable replica that seems to retail for $300. but
I found it at the link below for $199. A nice alternative to the
$1000 Sal D'Aquila versions of these props and the insanely expensive
$3500 versions that Albion were offering but I've never actually seen
evidence of real production versions of those.
http://www.cbswords.com/default.php/cPath/48
Ivory