"Wien-Stephansdom" Artist Signed in Pencil Ludwig "Adamus" Hand Colored Lithograph

This is a framed hand-colored lithograph of the famous St. Stephan's Cathedral in Vienna, Austria, by Ludwig Adamus. It was signed by the artist in pencil. Dates approximately back to 1940s-1950s, in my opinion. The lithograph was signed after the initial framing, on the outside paper, suggesting an artist's personal approval of the work. 

Identical 2 unframed items were sold in an auction in 2020 here: https://www.proxibid.com/lotinformation/57031349/wienstephansdom-artist-signed-in-pencil-ludwig-adamus-hand-colored-lithograph

There is a very minor damage on the frame.

Good