Lee Reynolds 4 x 5 abstract on canvas

The artist Lee Reynolds Burr or Lee Burr founded Vanguard Studios in 1964. He allowed his students to sign his name on their paintings as a way of promoting his name.

Paintings actually painted by the genuine Lee Reynolds will be signed as "Lee Burr" or "Lee Reynolds Burr".  There are a few paintings where he signed Lee Reynolds early in his career in 1960-1961 but very few. Your painting appears to be of mid to late 80's design and is therefore a Vanguard piece.

Here's a copy of som information about Vanguard:

Vanguard Studios produced more painted canvases bearing one signature, Lee Reynolds, than any artist in history, but none of the artworks for sale were actually painted by Lee Reynolds Burr.
Artisan House, Vanguard Studios employed numerous artists to duplicate original paintings. Backgrounds were often done in acrylics and then line-work was silkscreened from the master copy. (This silkscreening technique was also used by Andy Warhol’s The Factory.) Details were then added to the screened lines to create a raised effect. The finished product was then sprayed with an oil sealer, thus creating an original oil painting. Paintings were signed Lee Reynolds. Vanguard Studios also used other signatures including Reynolds, Stuart and Van Gaard.