When the 66 was reintroduced, I thought it odd that the 2 3/4" barrel version had the SW logo under the thumb piece stamped and the 4" version laser etched.
I noticed on Gunbroker that there are now some 4" 66-8s for sale with stamped logos and rounded grips.
On my 629, I had SW remove the laser etched logo and stamp the logo as god intended.
Just thought I'd mention it here as I know there are a few who don't like the laser etching.