Antique Bavarian Lithographic printing stone

This Antique Bavarian Limestone Lithographic stone approx. 11'' x 9'' x 3'' contains artwork
Circa 1860-1900's est.

Side 1

• Artist illustration of Next Queen's Hotel
(I believe the Queen's Hotel stood in 1862 now the site of the Royal York)

• Lord Dufferin Cigarette Edging Strips

Side 2

• Lord Dufferin Cigarette Package Art

• Canadian Bank of Commmerce
• The Central Canadian Loan and Saving Company

Trying to establish a historical value.