MMA10mm:
The sight that was originally on the gun was not original. It was a piece of steel in a half moon shape that looked like it had been nickel plated. If you look carefully at my photos you can see the original sight, compared to the dime. The rear sight on these guns is such a tiny notch that the front sight that was on the gun almost completely filled up the notch, making it difficult to shoot accurately. On top of that, my eyesight is very poor. The dime is thinner than the sight that was on the gun. Hap had to shim it on both sides to get it to fit the slot. The other thing is, most of these guns had front sights like a knife blade. The front sight on my New Model Number Three is so thin that in poor light, with my terrible eyesight. I completely loose it. Can't see it at all. Clearly, the guys who set records with these guns over 100 years ago had much better vision than me. I am away from home right now, but when I get home I will measure the thickness of the sight that was on the gun and the dime for comparison.
The dime presents a front sight of equal thickness for its entire height. Plus, being a bit narrower than the sight that was on the gun, it provides more daylight on either side when viewed through the narrow rear sight. The color is not much different than the sight that was on the gun in the first place. I have only used it in three matches where they allowed me to. I had no trouble picking up the sight at all. Probably the serrations on the dime helped me pick it up too, and probably cut down on glare a bit. All in all I am quite pleased with it.