Interesting. There's some site I found at some point that had the garment workers' labels from all eras. But I don't remember seeing the one in the ad.
I'd be interested in a look at that site Horace if you remeber what it is. Some info can be gleaned from the net and Ebay has some info on these labels to.
Other interesting point I thought was that over 100 years later and still sweat shops abound.