Measures approx 27.5″ x 23″. Does show signs of use ware and tare slightly bowed but would be ok once fixed. Looks great, more interesting than a newer one good for display or kitchen splashback etc. I think this maybe 1 part of 3 as it does have a border to 2 sides. If required I can cut the border off the 2 sides so it’s just a symmetrical shape just let me know. The back is also rusty in places. I’m not sure of the age, it is definitely enamel / porcelain. Good condition with rust and some wear and tare here and there especially near the mounting holes. Ask any additional questions. Please study the pictures as they are part of the description. Please see my other listings.