Why would you ask ? How did you come across these prescription "pills." They should be returned to the rightful owner or disposed of properly.
Vicodin comes in neverous sizes, shapes and colors. Watson is most likely the manufacturers name. They manufacture all kinds of medications.
If it is a small yellow oval pill and is scored in the middle so it can be broken in half it could be Norco or Hydrocodone 10mg with Acetaminophen 325mg. Hydrocodone with Acet. is also known as Vicodin. That is what I take and I usually tell others it is Vicodin because most do not know what Norco is. It's just easier to say that instead of explaining all the different brand names of the products with Hydrocodone and Acet.