These are described as “Sweet Bella vintage Italian notebooks from the ’40s and ’50s.” If they are really that old and not reproductions made more recently, that is pretty cool! They look brand new…

 

Sweet Bella’s website features some products from Antica Cartotecnica which are said to be vintage items “culled from decades of storage,” but they don’t currently have anything that looks like these.

Found via a 2011 post at Mohawk Connects.