Mine says CXNU103649 but thats way cool that you have 2 cars built within days of each other mine is a 92,The only confusing thing about where the car was produced the last letter on my car say "U" which is the ZAMA Plant but ive did it the way that i saw a Nissan VIN sketch "X" which is Nissha-Hiratsuka yours say "M" but not sure what plant that is but i think nissan wont build the car at a different plant so ive just confirmed the cars were built in ZAMA Japan.