Thinkgood...
As I remember the commode wasn't that old.. But the Square D Multi Breaker panel was on the outside wall of the bathroom here, leading me to believe that the bathroom has more than likely been there for quite some time... Didnt the Multi-Breakers come out in the 30's or 40's?

Sven...
I heard NM-B wasn't allowed in NYC... Period!

-Randy