It is a medium size Dutch chess clock from the beginning of the past century. By the rear inscription ‘HK 1914’, everything indicates that it is one of the first chess clocks manufactured by the Koopman family.
it uses German-made alarm clocks.
It is a medium size Dutch chess clock from the beginning of the past century. By the rear inscription ‘HK 1914’, everything indicates that it is one of the first chess clocks manufactured by the Koopman family.
it uses German-made alarm clocks.
It is a large Dutch chess clock, manufactured in 1936. The design of the wooden case was used by the manufacturer Koopman in the early years of the 20th century.
it uses German-made alarm clocks.
We have a Dutch Chess Clock from the beginning of the century, it was made in the period 1900-1920. It has large dimensions and a weight that exceeds 35 ounces.
Many Dutch chess clocks from the early century use the typical sliding bar in the upper area, which runs through the clock case throughout its length. Each player slides the wooden bar, causing the own clock to stop and activate the opposite clock.