via this auction
This one was spotted and sent in via M Me.
This appears to be the first post to feature the Rhythm Generator. Watford also made a Mark 1 drum machine mentioend in RHYTHM MACHINES - The Rise And Fall Of the Presets - by Alex Graham.
Details from the listing on the Rhythm Generator:
"Vintage Watford Electronics Rhythm Generator 1970s Drum Beats Machine Rare.
Built as a kit from Watford electronics parts with the UK magazine practical wireless. Basic unit but it's pretty rare. The exterior case is a little marked, the maker appears to have used it as a soldering iron rest 🤦🏻♀️ Would probably benefit from power and output leads / plug being rewired replaced, but it's been tested as working as far as using a pair of headphones goes with it. All the beats were heard through them and tempo/ volume change etc."
