2002 is the year the Philharmonic's face value switched from Austrian schillings to euros, following Austria's adoption of the currency. The coin's actual design didn't change at all — this is purely a denomination update, but collectors track it the same way they'd track a design change, since it's a clean, checkable dividing line between "pre-euro" and "euro-era" Philharmonics.
Not a scarcity date — 2002 and surrounding years are common. Useful mainly as a quick way to date a Philharmonic at a glance: schilling-denominated coins predate 2002, euro-denominated coins come after.
Log the year, your cost basis, and photos — and see it valued at today's spot price alongside the rest of your collection.
Start tracking freeOnly the face value, switching from Austrian schillings to euros as Austria adopted the currency. The coin's design and purity were unaffected.
Not significantly, for common dates — the currency switch is a dating detail collectors note, not a driver of real scarcity premium on its own.