Kern standard top block. Used on Horolovar suspension units 10D, 11A, and 11B. Original manufacturer stock. The one you receive may be made of stainless steel or brass. This block is thicker than other blocks.

We can help you find the right blocks for your clock, assemble your suspension unit to the proper dimensions, install the suspension unit on your clock, and put the clock in beat. Any questions, just ask!