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Does the extract read 'cal 23.4' . . .

 

. . . or 'cal 23.4 SC'?  I underlined SC intentionally to bring it to your attention.  If it reads cal 23.4 SC (seconds central) the movement is likely correct, but then we're left with the quandary of the reference designation CK 859.  It's not impossible for a reference to be associated with three different movements, but highly unlikely to be assigned to both sweep and subsidiary movement types.

Art

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