Welcome, and thank you for looking!One new bottom block to be used for Schatz 49 clocks in suspension unit 6789. This bottom block will fit all Schatz standard movement clock pendulums ( all Schatz clocks with the number '49' in a circle on the back plate). This bottom block may also be used on some other standard size 400 day anniversary clocks. We have top blocks, forks, and bottom blocks for most key wind anniversary clocks. Let us know if you don't see what you are looking for. We know anniversary clocks. Any questions, just ask! () We provide shipment tracking for all shipments within the USA! And shipping within the USA is FREE!!! This bottom block is guaranteed to fit the clock and model specified. We want you to be happy with our products and service. Please contact us if you have any questions or problems. We feel you've done your share for a successful transaction once you've paid for your purchase. Why should you have to wait until you've left positive feedback to the seller before receiving your feedback? We leave positive feedback when payment clears! We will usually ship within 1 business day of receiving cleared payment.