Chuck!!
I like these.
http://www.navyandmarine.org/index.htm
http://www.history.navy.mil/index.html
http://www.cwsmma.org/TheCutlassCaveditsNiche.htm
The copper and nickle plated job that surfaced and a ringer of a Neumann 18th century piece that I couldn't pass up and have adopted.
Cheers
Hotspur;
the repro at the bottom already comes with rust and a dark blade 