Nope. I'm from Canada amd I've never even heard of those weird ass numbers. Maybe they are some type of home-delivery weight set!?
It is a home delivery set; but, I've also seen this used in a Muscle & Fitness video preview tape I got with a bag of Mega Mass 2000. As I said, I first saw this type of barbell set at my best friend's house, where I would train on occasion. And, I believe another poster stated that his gym had these type of weights.
I've also seen these types of sets, when I was in Spain. If you use the metric system, these number aren't "weird" at all.
Now that I recall, I used to have weights in kg as well: The weight set I got from my old grade school. I had one of those old-school tiny benches with the small-diameter bars and the cement weights. The Orbatron ones were in kg. I had the 2 kg (4.4 lb), the 4 kg (8.8 lb), and the heaviest of them all, the 8 kg (17.6 lb).
Man, is this stuff bringing back memories. I kept that until my freshman year of college, when I got my gym membership.