This is a genuine Diatonic, it came factory assembled and is a really cute little amp.
A top grill (bird-cage) style cover was also available as an optional extra……though not shown in any of these photos.
Here is the customers e-mail after receiving his little baby back:
"Hi John. Just a quick note to thank you for the speedy and efficient repair of my Linear Diatonic amp which has been languishing for some months waiting for someone who knew what they were doing! I tried it when I got home and it is sounding fine.