I acquired a North Bros. Yankee 2101A - 10 In brace recently. I found references here in the creek to georgesbasement, and from looking at that site it appears that I have an actual North Bros made in Philly, but after the Stanley acquisition.
It does say Bell Systems on it.
It does have three oil holes. It seems to work fine. What kind of oil and how much/often should I be lubricating this? I've not been able to google up any kind of maintenance instructions thus far.