I have been cleaning up the remaining set of fuel/vent lines and have noticed that there has to be at least 10 different sizes of retaining clamps used on the car, in all different finshes and paint colors for the various brake/fuel/emission vent lines, which all come with or without the coil spring sheathing. I have found bright yellow, zinc chromate green, black painted, black phosphated, natural metal, silver cad (or zinc) coated of the various sizes both with and without alignment hole locating tabs.
Most of the retainers have a size number stamped on them in inch measurement like 24/64". Here are a few photos of the before and after clean-up shots. I wirebrushed the lines and the coil springs and just gently hand cleaned the retainers with a tooth brush and extremely diluted "purple stuff" degreaser, as I am trying to retain all the original finishes and not repaint/recoat them.
After the cleanup, here is the last set of lines, the rear fuel/vent to subframe lines:
