You're welcome Robert...and Neville your memory was spot on..The 1968 telephone directory has The Bon-Bon, Sweets, Tobacco, 2089 Coventry Road.
I havent found an Aston's butchers by Caves as yet, but looking at the photo from 1973 showing the 3 shops including Cave's, I am thinking that next to Cave's was possibly a greengrocers and that the boarded up shop on the end was the butchers and it appears to read J, Jasper on the sign, but I have not found a J Jasper on the Cov Road in the directories I have searched...
Robert, I have just found an Aston, R. F & Sons butchers, not by Caves but further down in Arden Oak Road. Could this be who you are looking for ?
There are 3 shops listed under the name
9 Land Lane, (Marston Green phone number)
10 Arden Oak Road (Sheldon)
158 Station Road (Stechford number)
Found the same in 3 directories...1960/62/68