On multiline appearance groups, 7340 & 7341 show on buttons 6 & 8 as key system for phones 7150 & 7151.
I went out and actually found the phone. I didn't have a location for it. Lucky it was labeled 6586 on the key system buttons. Which call routes to 7339, the hunt group number for my 2 key system numbers.
I just wasn't able to back track to ID them.
Thanks !