Father left me his Breitling (about 10 years old). It stopped working so I sent it to Breitling. It came back as unrepairable as they did not stock the movements any more.
Apart from sentiment, I was upset that Breitling wouldn't stock parts for watches older than 10 years old. Eventually I was advised to go see an old Lithuanian watchmaker on the corner of Oxford St/Tottenham Court Road. He located a new movement, repaired the watch and its been fine since.