Traditional weight powered cuckoo clocks gave way to spring power after cast brass movements frames came into use by the smaller Black Forest clockmakers.

This example illustrates efforts to expand the export market with richly carved table cuckoo clocks with solid cast brass movement frames containing a fusee controlled mainspring power. The movement bears the letters of G.H.S., the trademark of Gordian Hettich & Son.

At left, also from Beha, is a very rare early (ca. 1850-60) shelf cuckoo with fine carvings and unique burl veneer. It too, like most clocks that Beha made, has fusee compensation on both time and striking trains..