I recently purchased a large quantity of vintage component hardware from a friend who's "thinning the herd". I haven't had a chance to clean any of it up as of yet, but am trying to properly identify as many of the pieces as possible for possible sales and/or trades.

I picked up several L-arms in the lot. One appears that it might be a Ludwig model from the late 50s - early 60s. However, I'm not certain since all of my Ludwig L-arms have the tear-drop shaped tilters, not a round one like the one found on this piece. I'd appreciate it greatly if one of you Ludwig experts would be kind enough to take a look at the first 3 attached pics and provide your input so that I can confirm one way or another.

There was also another L-arm in the lot and I'm totally clueless as to the manufacturer. It can be seen in the last two pics that I've attached. Any "words of wisdom" on this one would also be greatly appreciated.

As usual, thanks in advance for your time and your help!