I was given an old Singer in a nice cabinet/table. I don't know anything about this machine or if it works. The only numbers I can find is one on the top of the base AE556730 and the number 4 on the bottom side of the base. Where do I find out what I have?

http://www.singerco.com/support/serial_numbers.html

It appears you have a model 15 produced on June 16, 1937 at Elizabeth, New Jersey. Congrats!!!

Try Singer.com and look up the serial number

June 11 1937 class 15 machine

If you get it working it will last a long, long time. And it sews absolutely straight, which any of the more modern ones do not.
Congratulations!!

Thanks! I knew someone on this site would know what it is. I will see if it works. Donna

Congratulations! Would love to see a picture of it :D:D:D

I have to do some rearranging and clean it to get a picture.
When we get through remodeling my sewing area I plan on posting a picture of all of it.