I don't have it yet, but I definitely will.
I was kind of thinking maybe 70's -80's based on the the overall look of the label and not having any 8pt's making it later than the 60's, but I'm no expert.
It appears to say new Britain machine company on the label.
In this picture the type of marking on the ratchet and different handle shape makes me think it may be a later replacement.
With a decent selection of sockets ( supposed to be 3/8-1" ), a ratchet, speeder, breaker bar and extensions it really seems like a great user set.
$60 shipped is a bit high dollar I suppose, but I think it's probably worth it considering what it comes with.