Hi Len,
The 1992 Airgunner Annual had a feature on 'The Helping Hands Agency', a shop from bygone days which John Atkins reminisced about. It is a fascinating article as we can all probably think of similar shops, which are now sadly gone for ever. The Acvoke is featured but not in as much detail as you may be hoping. I have the issue but regrettably no scanner. If you cannot obtain a scan, I'll ask Troubledshooter to take a copy of mine when we next meet up.
Kind regards,
John