Pomologia / Johann K.H. Knoop. Leeuwarden: Abraham Ferwerda, 1758. Plate 7 Coloured engraving.

The image is from the book ‘Pomologia, dat is beschryvingen en afbeeldingen van de beste zoorten van appels en peeren’. The front page of the book bears the signature of A.M. Sprenger, so this copy probably belonged to Professor Sprenger. The plates in ‘Pomologia’ can also be viewed in WUR Image Collections, in the Historic Fruit collection.