The record of the National Fruit Collection, at Brogdale in Kent, describes it1:
Raised by Supt. Cludius of Hildesheim, Hannover, Germany. It was recorded in the 1850s. Fruits have a sweet, vinous flavour.
Where Cludius Herbstapfel came from.
Sources
Cludius Herbstapfel (accession 1958 - 057), National Fruit Collection, Brogdale, Kent (Defra).
Supports: the description quoted; the use; the fruit's size, shape and colours and the flesh, from the collection's characterisation; the picking time at Brogdale (mid september); the other names.