"Canon Zoom Lens EF 100-400mm 1:4.5-5.6 L IS"
So, it appears to be an L lens. The separate letter "L" is red on the camera like I typed it. It cost about $1,500 brand new seven years ago. It has been a great lens. It is small enough to hand hold when taking pictures.
FYI, the picture in post 41 was hand held through the window of my car, which was running. Exposure time was 1/800th of a second, the f stop was 10, and the ISO was 800.
Yeah, that’s an L lens. Probably white. Their top of the line.
(sigh) you get what you pay for.