Sorry no picture of the Zulu yet, but it is a pretty cool gun.
I took a some photos of the Harper Ferry rifles, so hit up my photobucket link to view.
When I bought the lot, my interest was in the Bess, but I did look over the 1805 and instantly though it was a British fowler with an updated percussion lock.
Only after giving in to my curiousity, I remove the barrel to look under it for Birmingham proofs, but only found a giant "S" stamped into it, and the top proof are too distorted to make anything from it.
The 1814 HF has a faint eagle on the lock, but no visible sign of maker and date.
So it might have been replaced during the conversion.
If I keep it, I might do a reconversion to it, as I love flintlocks, and it's not worth much w/o the markings.
Who knows....