If you decide you want a restored one, let me know, I can fix you up with one. If you want to check out my work. search "Sunoco Custom Blended" see picture under member: 1968L88 that's one of my pumps. I have 3 more under process of being done as we speak... Mike
The 511D was an earlier model with a slide mechanism to show the chosen grade. See the attached picture. the 511E came later on and started as a 8 grade and later in life became a 5 grade. see attached picture from Marks post.
Yes,as Mike said,the "This Sale" slider was the difference. It was always a 9 wheel grade/price wheel though,that had a cover plate that covered up one grade. Here's my 511E close up showing the later SOLD roller.
Last edited by Cold Pizza; Sun Feb 02 201408:28 AM.