1964 Skylark vin # 3k301855 I didnt know it was gone till it was too late, when i got the tow papers the auction was already over.
The VIN was 9 digits in 1964. You've only listed 8 digits, so check your paperwork again. Once you find the correct VIN, if you know a police officer or someone who works for the DOL maybe they can run it for you.
assuming you got the first 3 digits correct, it was: 3- Skylark v8 K- 1964 3- Freemont, CA plant the last 6 digits is the sequential number. Here's a site for decode: http://www.tpocr.com/buickvin2.html