Help me identify these retro hubs
Ursus is a real brand, even though you don't see a lot of them in the US. Most of their current stuff is fairly high-end, but the ones you're showing look pretty basic (and fairly old- by the 90's hubs were mostly cassettes, not freewheels). Should be fine for road riding/ commuting as long as you know how to lace a wheel. Otherwise the cost isn't going to be worth it and you should just get a pre-built wheel or wheelset.