These are relatively accurate but would have to be verified by physical inspection.
KG is a German (originally Austro-Bohemian) manufacturer of musical instruments, with one division that manufactures guitars and basses, and another that manufactures other string instruments, such as violins, violas, cellos, double basses and bows for stringed instruments.
Much of Höfner's popularity is attributed to Paul Mc Cartney's use of the Höfner 500/1 bass throughout his career.
Information concerning which year a certain model was introduced, or when configurations where changed, varies a lot.
It seems quite clear however that the 125/126 was first introduced in 1954 and that their Club equivalents where born in 1957/58, when Selmer became the Hofner agent in the UK.
The company became involved in production for the German army in World War II producing wooden crates and soles for boots.
After the war Germans were expelled from the Sudetenland and Hofner was forced to move to West Germany. Karl Höfner, the founder, lived to see the company revival and died in Bubenreuth in 1955.
Please be aware that many people altered their instrument, sometimes to adapt it to their belongings, sometimes simply to 'pimp' it according to the ideals of the particular time.
Not less important is the fact that neither the year of purchase needs to be necessarily the year of the production nor does the pot-code* guarantee that the instrument was built in exactly the same month or year!
When it comes to the 127/128/Club60, information is more ambiguous.
Year of introduction varies between 1954-1961, depending on source of information.
It's ironic but the 500/1 was not available in the UK until 1963.