Hi Tim,
Thank you for contacting Mearto with your appraisal inquiry.
This is on canvas; whether it's a canvasprint or an original oil or acrylic on canvas is a little difficult to tell from the photos; the (c) copyright symbol in this case means that the artist did commercial work and this may have been an original she was commissioned for. I'll err optimistically and value this as an original; keep in mind that if under physical inspection it turns out to be a canvasprint, the value would be less (between $50-100).
The market for mid 20th Century primitives such as this have seen increased strength in recent months.
Based on the photos and information provided, and subject to examination, this is:

Joanne Case (American, 20th Century)
"Wells Fargo & Co., Express", 1982
acrylic or oil on canvas
signed and dated lower right
Stretcher: 14 by 18 inches; frame 18 3/4 by 22 3/4 inches
PROVENANCE: acquired from a framer circa 2000
$800-1,200*
*represents a fair-market value for auction purposes; retail or asking price may vary.

Please let us know if you have additional items to appraise, and thank you again for using Mearto.