Whoops! I made a mistake-what I get for just looking through the grill. Its actually 55H113!
Here is the best photo I can get of the yoke.....
And one showing the horizontal linearity control (left), drive (center) and width control (right). They look original to me.
Currently I have to back the drive control off to its counterclockwise limit to remove the vertical wrinkles at the right side of the picture. Is there any risk of damage of the flyback or horizontal output tube if I do this?