Thanks Sarg. I think it's pretty interesting as well. Alexander Henry magazine rifles are exceedingly rare. Caprivi, I've only seen two examples, which doesn't necessarily mean much, though I'm attempting to have the records checked (at least what's left of the records).

As requested, below are photos of the front sight. The ramp is identical in shape to those found on Fraser's magazine rifles. Also, the placement of the ramp at about 1/4" back from the muzzle is the same treatment given by Fraser on his magazine rifles (and quite often his double rifles too). The dove-tailed blade is obviously not original. I'll correct it by filing up a proper "caterpillar" once I get the point of impact correct.