Help with vintage oyster date

[Acabucca]

Hi

I am looking at getting a birth year date/datejust from 1973

I am looking at one and been told the serial number is

229xxxx

I have tried looking on various sites for the answer but it doesn't match up.

Is this serial around 1973?

Also while I'm asking, it's on an oyster bracelet which has gaps due to age. Any idea how much it would cost to get this sorted?

Thanks