Patek Philippe

This was part of a family estate and I am trying to understand the provenance it is marked 18K 750 4146503 and 5053 on the back any ideas about value? Moderator Edit: It is a violation of our user terms to discuss value. Please do not use this platform to...  

Thanks I wasn’t certain as there was a lot of items in the estate many valuable

Also, the reference number, 5053, yields this model: ...  

Ok thanks