All chicks have the spur nubs, just not all will grow spurs. Some hens will grow spurs though, I have had a few with spurs and have a sumatra pullet with a row of 3 nubs on each leg. Looking at your chicks leg in this picture, I am only seeing the one spur nub. I would watch and if this ends up a rooster with only a single spur, I wouldn't use him.
Good luck with your chicks.