Old electromechanical clock ticking "yantar'". Electromechanical watches "amber", orlovsky watch factory, were made in 1977, the housing is made of wood, quartz movement. --recorded mono with sennheiser mkh40.
You could hear this rhythm in a place with several clocks; actually i got this 'clock rhythm' idea after hearing a cool beat made by three clocks. Sounds used found in the "clock tick rhythms pack.