Vintage Robert Laessig Signed Floral Litho Prints on Wood Plaque Zinnias & Mums

VINTAGE Signed Robert Laessig Floral litho prints on Wood Plaque w/Forget-Me-Nots, Zinnias and Mums and other flowers. I'm guessing these date to the 1960's-1970's. Robert Laessig was very well known for his floral artwork, passed away in 2010. Good used condition, please see pics: some surface scratches, some bubbles in the varnish, which has also darkened and yellowed with age. The one with mums has a few flecks of turquoise paint. Very retro looking!