If you are asking about the value, well it would be minimal. I don't recognize the artist. I have numbered prints by several of the Group of Seven and I don't expect to get back anymore then I paid for them which was about $125 each

tick

I have a sketch of a cowboy by an artist by the name of Bob Johnston. It is signed and numbered. I would be interested in Possibly purchasing additional prints by this artist and any information about him.

We are going to auction an original bob johnston painting on May 6th. It is called Caughtwaters Castle, and it is an amazing painting, done with a single haired brush. Please contact us for details, you can bid on-line. Auction Empire, Mesa, Arizona, 480-256-1400

Don't know if they may be my prints, but am an artist named Bob Johnston, which is a fairly common name, but do not know of another artist by that name.
Am from Arizona, so some call me a "Cowboy Artist" though have not thought of myself that way. :)
Nadine and Bob Johnston - Fine Art (http://thegrandcanyonartists.artistwebsites.com/?tab=artworkgalleries)