I am working on The Harder DRP 2437 number 504R (GW&Cie) pictured below. As you will see from the pendulum close-up the weight adjustment rod has its threads taken right to the ends, which are perfectly finished, i.e. do not terminate in broken-off square ends which we have all seen before. The rod is a pefect fit into the weights, which have no A/R or F/S markings, but it puzzles me - is it original or a replacement? Questions arising are: 1. Did some of these very early disc pendulums have rods without square ends? 2. If yes how were they adjusted "on clock"? 3. Shoud the weights have fast/slow markings? The clock is in tip-top condition and running perfectly - it all looks original to me (but I am in no way an expert on these!!) I have put the three pictures on in case John Hubby does not have this one in the database. Could John, Mr C W Mun or one of the other specialists help with answers to my queries above? I will be grateful for any comments, particularly on whether I should proceed to machine square ends on the rod. MichaelDavies.