Mason Sullivan Clock Movement

Mason and Sullivan clock movement identification

The numbers on the brass back plate of the Mason and Sullivan clock movement is where we need to start with the identification, so we can determine the proper replacement.

The numbers and or letters will tell us everything we need to know. With these numbers we can tell the strike hammer locations, the movement plate size, the hand shaft length and everything else.

Ordering a Mason and Sullivan clock movement

So if you have an X in the number that is stamped on the back plate of the clock movement, it’s time to look for this number in the chart located below.

The movement that will be sent to you will have a different number, but it will be the same movement as they are still in production. The new movement comes with the chains or cables and pulleys if it is weight driven, and they all come with the suspension spring and the clock hand nut as well.

Why get a new clock movement?

A New clock movement will be the same movement you have now but brand new. It is not a cheap unit as a substitute, it is the same movement that are still being made.

Although Mason and Sullivan is out of business, the movements were not their own. They had them made by German manufacturers that are still in business and making the same movements. A new movement will last longer than any repair is able to last, factory lubricated and improved upon, less money than a repair, and comes with a warranty.

What happened to the old movement?

On the back plate of the Mason and Sullivan clock movement itself, usually on the low right, you will see some markings with an X at the end of the number.

This is if your clock movement has the Mason and Sullivan number system only. Even though you purchased your clock from Mason and Sullivan, it does not necessarily mean that the movement will be stamped with the Mason and Sullivan numbering system. If you do not have an X in the number, then it is most likely a Hermle movement and you would need to go to that webpage.

Mason and Sullivan Clock Movements

Movement # Chime Type Driven by CM length Handshaft Picture
3200X = HT116 Triple Chime Cable Driven 116cm 56mm Pic
3201X = HT116 Triple Chime Cable Driven 116cm 56mm Pic
3206X = KSU78 Triple Chime Cable Driven 116cm 47mm Pic
3210X = KSU78 Triple Chime Cable Driven 116cm 47mm Pic
3211X = KSU78 Triple Chime Cable Driven 116cm 47mm Pic
3212X = KSU78 Triple Chime Cable Driven 116cm 47mm Pic
3213X = KSU78 Triple Chime Cable Driven 116cm 47mm Pic
3216X = KSU26(N/A) Triple Chime Chain Driven 116cm 47mm
3223X = KSU78 Triple Chime Cable Driven 116cm 47mm Pic
3226X = KSU26(N/A) Triple Chime Chain Driven 116cm 47mm
3227X = KSU78 Triple Chime Cable Driven 116cm 47mm Pic
3230X = 461-053 114cm Westminster Chain Driven 114cm 53.2mm
3231X = 1161-053 114cm Triple Chime Chain Driven 114cm 53.2mm Pic
3232X = 1161-853 114cm Triple Chime Cable Driven 114cm 47mm Pic
3260X = 451-050 94cm Westminster Chain Driven 94cm 33.2mm Pic
3261X = 1161-853 114cm Triple Chime Cable Driven 114cm 53.2mm Pic
3262X = 1151-050 94cm Triple Chime Chain Driven 94cm 33.2mm Pic
3266X = 351-050 94cm Westminster Spring Driven 94cm 33.2mm Pic
3268X = 241-040 94cm(N/A) Gong Strike Chain Driven 94cm 33.2mm Pic
3270X = 451-050 94cm Westminster Chain Driven 114cm 33.2mm Pic
3281X = KSU80 Triple Chime Cable Driven 93cm 47mm Pic
3286X = KSU80 Triple Chime Cable Driven 93cm 47mm Pic
3300X = 141-030K 66cm Bim Bam Spring Driven 66cm 33.2mm Pic
3301X = 141-040K 66cm Bim Bam Spring Driven 66cm 33.2mm Pic
3304X = 141-040 66cm Gong Strike Spring Driven 66cm 33.2mm Pic
3314X = RWS13 Westminster Cable + Spring 65cm 32mm Pic
3315X = RWS13 Westminster Cable + Spring 65cm 32mm Pic
3318X = RWU03(N/A) Triple Chime Spring Driven 15cm 32mm
3319X = RWS13 Westminster Cable + Spring 65cm 32mm Pic
3322X = 1051-030 43cm Triple Chime Spring Driven 43cm 33.2mm
3331X = Westminster Spring Driven 75cm 33.2mm Pic
3334X = 131-030 55cm Bim Bam Spring Driven 55cm 33.2mm Pic
3335X = 241-840 75cm Gong Strike Cable Driven 75cm 33.2mm Pic
3337X = 351-020K 55cm(N/A) Westminster Spring Driven 55cm 33.2mm Pic
3339X = 131-080 55cm(N/A) Bell Strike Spring Driven 55cm 33.2mm Pic
3341X = 141-030K 48cm Bim Bam Spring Driven 48cm 33.2mm Pic
3342X = 141-040 38cm Gong Strike Spring Driven 38cm 33.2mm Pic
3350X = 141-040 38cm Gong Strike Spring Driven 38cm 33.2mm Pic
3352X = 141-040K 38cm Gong Strike Spring Driven 38cm 33.2mm Pic
3354X = 351-020 38cm Westminster Spring Driven 38cm 33.2mm Pic
3360X = 141-040 23cm Gong Strike Spring Driven 23cm 33.2mm Pic
3366X = 351-020 52cm Westminster Spring Driven 52cm 33.2mm
3370X = 141-040K 48cm Gong Strike Spring Driven 48cm 33.2mm Pic
3380X = 141-040 66cm Gong Strike Spring Driven 66cm 33.2mm Pic
3390X = 141-040 29cm Gong Strike Spring Driven 29cm 33.2mm Pic
3393X = 351-020 25cm Westminster Spring Driven 25cm 33.2mm Pic
3396X = 131-080 23cm Bell Strike Spring Driven 23cm 33.2mm Pic
3397X = 132-071 Ships Strike Spring Driven Balance 33.2mm Pic
3398X = 131-080 23cm Bell Strike Spring Driven 23cm 33.2mm Pic
3600X = 350-020 Westminster Spring Driven Balance 33.2mm Pic
3602X = 1050-020 Triple Chime Spring Driven Balance 33.2mm Pic
3603X = 1050-020 Triple Chime Spring Driven Balance 33.2mm Pic
3604X = 150-070 Gong Strike Spring Driven Balance 33.2mm Pic
3605X = 350-020 3201X = HT116 Westminster Spring Driven Balance 33.2mm Pic
3621X = 341-020 31cm(N/A) Westminster Spring Driven 31cm 33.2mm Pic