This is a vintage Bing & Grøndahl (B&G) Copenhagen porcelain mini collector plate featuring the Thorvaldsens Museum. 

• Brand: Bing & Grøndahl (B&G), a Danish porcelain manufacturer. 

• Design: Part of a series of small square plates designed by artist Kjeld Bonfils. 

• Subject: The plate features an image of the Thorvaldsens Museum in Copenhagen, Denmark. 

• Identification numbers: The backstamp includes the numbers 1703/5708. 

• Features: The plate has small holes on the back for hanging as a wall decoration

• Identification Number: The numbers 1701/5708 help identify this specific design within the series. 

• Material and Origin: It is made of porcelain and marked "MADE IN DENMARK