is there any clue as to when the father was born?

Hayley Van Beever

https://www.familysearch.org/ark:/61903/3:1:939D-9Z94-NC?view=index&personArk=%2Fark%3A%2F61903%2F1%3A1%3AQLW7-M51M&action=view

Philip Salomon Degen

Male

about 1790 – Deceased

9JRV-ZV

Adrien Kintziger

@Hayley Van Beever

The document is a birthcertificate for a daughter dated 1821,...but the age of father or mother is not mentioned.The name PSD is very common around Amsterdam.

Open archives does have a scan of him, also marriage age and partner (i checked the partner, in your above link, its her) so you can follow the link i will include to find the scans for him and relatives.on the marriage doc that you will find on that link , his age is mentioned as 37 by the interpretor,but if i read it, looks more 37 yrs..very difficult to read; this 37 =in 1815 (marriage.) you can use open arch freely, no subscription/government driven and owned.

https://www.openarchieven.nl/nha:A883E79E-6FC4-436F-A9EB-23A3BED555E1