Power Drury & Co 1902 Malmsey

[Llyn Strelau]

Hi folks,
One of my clients has a bottle of Madeira that he got from an estate that he helped liquidate.
Don't have the photo of the bottle yet (will share when they supply it)
Label reads:

POWER'S MADEIRAPower Drury & Co
Old Malmsey
Established 1814
Island of Madeira
Sweet, soft, slightly muscat
Vintage 1902
Says fill is high neck (but I have not actually seen the bottle myself)

Did some googling but didn't find anything of this vintage.

Any one have more info?

Not sure if the guy wants to sell it (I think he thinks it will be worth a lot of money). I would buy it if any good and reasonable.