What year is my murray lawn trator model 3860812c

Where on a white sewing machine can the serial number be found?

Sorry, I didn't make myself clear before. I have 8 dollar bills(federal reserve notes) with serial numbers that if you take them could be someone's birth date. For example L03141952R could be March 14,1952. Now I was told that there is a market for that kind of dollar bill with those type of serial...

I have some dollar bills with serial numbers that displays dates. Like 02 20 1935. I was told that there is a interest in that kind of dollar bill. I there someone that can give me the scoop on it?