Dear Alan,
Thanks for your elaborate explanation.
Whenever keris are concerned I always feel a bit like Princess Leia in Star Wars.
ie. "You are my only hope..." (Obi Wan Kenobi, than being replaced by A.G. Maisey

)
With my very limited, if not almost absent knowledge it turns out to be difficult to get any idea of age when a keris turns out to be well preserved or when it is lacking other signs of age, such as wear and patina
Thanks again and best regards,
Willem