Help Identifying a Porsche Design Ocean 2000

Hi.

I need help identifying the model and production date of the IWC Porsche Design Ocean 2000 that my father passed on to me.  It does not have any papers and the number on the caseback appears to be 2354026.

Attached are the pictures of the timepiece!

Appreciate any insights on this watch.  Thanks in advance.

Best regards.

That Ocean 2000 seems to be a reference 3500. Those early models were sold in the early/ mid eighties.

Greetings Martin

The bracelet seems to be 1st generation. They are known to make issues over time.

br Cromagnonman

Thank you.  Appreciate it.