Corrosion in Warehouse – What can be expected from a 23-year-old climate capacitor?

Hello, had recently reported on my purchase day, on which I wanted to buy everything I needed for the timing belt change and the sealing of the engine. In fact, I also got cooler and climate condenser as “new” original parts. The part number of the climate condenser was according to the ad text 4A0260403A. that would be a part which was omitted from the program in 2008. So I assumed that the part was only about 7 years old with some luck. Now the part arrived today, I pack it out and what do I see? The part has another part number, the 4A0260401A, which was then later and until 2008 replaced by the ***403A. In addition, on the sign with the part number is a supposed date stamp on it “23 92”. Would I first believe that the thing in the 23rd KW of 1992 was produced and thus 23 years old. Is of course beautiful, if original parts and then also from the year of EZ my car is used as an irreplaceable part for me?