Is it quick-set date? It means date can be changed by pulling out and pushing in the crown.
If it is, the movement should be 564. If not, it is 561.
Too early for a 564 (see post above about missing Ts- never 'dis' the Hoi ) They came along a couple of years later
OP - the 561 date function will still be 'quick-set' but in this case not as quick as a 564
Try winding the hour hand through 12 till the date changes, then back through 9 and then through 12 again
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