Describing it as The National Gallery Landscapes Postcards Book, it includes 20 Postcards available for mailing.
First, I’m seeing this was published just last year in March 2018.
“A stunning new range of stationery produced in association with The National Gallery.
Each title contains 20 full-colour postcards of outstanding artworks from this world-renowned institution, which houses paintings ranging from the late medieval masters to the French Impressionists.
The postcards in this selection represent some of the finest landscapes in the National Gallery and range from paintings by Turner, Constable and Seurat to Renoir, Pizarro and Van Gogh…”
Also, as far as postcard size, think of them as 4 x 6 inches. The product dimensions are showing 4.7 x 0.4 x 6.7 inches. Over at Amazon Prime, it is showing the pricing less than $14 for them.
Furthermore, there is always the option of just enjoying this as a book and keeping all of the postcards in The National Gallery Landscapes Postcards Book to ourselves!
Attribution & Thank you to the following I’m referencing today
The National Gallery Landscapes Postcards Book