Barring some unforeseen hidden flaw, which would be extremely rare, I think you can reasonably expect many years of use from your Ogden (or from a Troubadour or Prelude). I have a 1974 Troubadour 1 which is still in use. I have several other Troubadours of various ages and a Prelude which are used as student rental instruments, and they hold up very well. Lyon and Healy lever harps are sturdy instruments built for long life with proper care and maintenance.