Probably so, but the design points and the dimensions are very close to each other, to the extent that I believe seeing both front sights separated from the revolvers they belonged to, it would be difficult, if not impossible, to identify which sight was for which revolver. They could have come off the same production line. I did detect one very slight difference.
How were these sights attached to barrels at the S&W and Colt factories - maybe by silver soldering?