HP-97 missing keys

[Kees Bouw]

Hi All,

Recently I acquired a HP-97 in very good condition. Unfortunately two keys have broken off at some point. The previous owner did not have them. Is there anyone with a spare HP-97 that can serve as a donor for these keys? Second question: is it even possible to replace these keys? The white plastic remains that can be seen in the photo can be lifted up somewhat, but they cannot be taken out. So I am not sure how I could replace the keys, even if a donor can be found. Any help is much appreciated!

Kees Bouw.