[CJE]

Three A-3s (WNr. 528, 530 & 531) were modified for high altitude interception under the designation A-3/U7, changed into A-4/U7 in December 1942.
However, there is a well-known photograph of "Wutz" Galland's A-4/U7 sporting the WNr. 7092.
My question is: how many more A-4/U7s were produced?

Thanks in advance.

Chris