Over loading?

I've seen this before where a 15 circuit had a mix of 14 ga and 12 ga wiring. It was just a caution to you to check as a 20 amp breaker would not be a good idea in this case.

I grew up in NYC, & the stuff I've seen in my days, still give me the chills. :)

I guess I'll just leave it for now, in the event I trip the breaker then I'll change it, or add anther line. Thanks 

I just double checked my panel and it's 12awg on the breaker I changed to 20amps. Same wire is used for the kitchen which has 20amp breakers. I don't know what the run length is but it's closer to the panel than the kitchen...