The difference is that mid year Pontiac changed to a redline at 5200 rpm, so this would be correct for late 65 or all 66 full size Pontiac cars. I believe May 1965 was the change over. This is the Tach ONLY and does not include the Chrome Cup / Housing.Please note There appear to be 2 very very light surface scratches on lens as shown in picture. Need to hold at angle in light to see.
Most likely will polish out. Please feel free to contact me about any and all questions. NOS means New OLD Stock never used on a car.It does NOT mean 100% perfect museum quality. Most of these parts are over 40 - 50 years old. These are mostly out of the original boxes unless listed "in original box" and were found in a basement and a garage stash. I do my best to describe them and take lots of pictures and list anything I can see with the naked eye. You can zoom in like a magnifying glass and see it super close up, dust and all. 1966 66 PONTIAC 2+2 CATALINA VENTURA BONNEVILLE GRAND PRIX DASH TACHOMETER TACH. The item "RARE NOS 1966 PONTIAC 2+2 CATALINA VENTURA BONNEVILLE GRAND PRIX DASH TACH" is in sale since Saturday, January 14, 2017. This item is in the category "eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Gauges".
The seller is "laura70520" and is located in Rochester, Michigan. This item can be shipped to United States.