I don't know much about Royce Union from the past but I do know that all they make now are $50 Wal-Mart/Target/Kmart mountain bikes. I suppose at one point they might have been a decent name making decent bikes such as in this review for a 10-speed from 1970: http://www.pedalpushersonline.com/?CID=564

It's a shame that they're x-mart bikes now since their headbadge is pretty nice: