Ahab said:
thanks guys this means alot, that missing digit was messing me up.
Haha I'm a little late, but yeah, you've got a January '66 Stingray like I do.
When they started making frames after the 2-week factory holiday at the end of '65, apparently they left a digit out of the stamping machine. The first 2 weeks of 1966 production, that is all the A (January) bikes and a few of the B (February) frames got stamped A_ and B_ instead of AB and BB like the serial system should have been.
Yours is one day later than mine. I do believe it's a Junior frame as well. Jan 28 1966.
The bike itself was probably assembled and delivered in April or May... usually a month or two delay from frame date to final assembly, I've found.
You should have date codes on the crank, on original tires if you still have them, on the side of the stem, on the center knurl of the handlebars, and, if all that is missing, you should still have a date stamp inside the front fork. Look for a little number with a + in it, like 01+6 for January 66. It's just above the dropout for the wheel on the inside of the left fork leg. Sometimes they get mangled from wheels being mounted repeatedly.
I'd sandblast that frame and repaint it in a color you like with new decals. Personally I'm a big fan of coppertone, my Jan 66 bike is an original coppertone and looks amazing in the sun.
Good luck, feel free to ask any other weird technical Schwinn questions.
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--Rob