Oooh, I like those ones. They even come in some narrower sizes. So many of the beautiful leather collars are so wide; Meg looks like she's wearing a neck brace in anything over 1", and I much prefer the 3/4" on her.
These are the collars I'm currently lusting after:
https://collarsandleashes.com/index.htm
These are the collars I'm currently lusting after:
https://collarsandleashes.com/index.htm