fewer than you know
Production cues seem to stand up better to constant use more so than collectible cues which are functional pieces of art for "collecting" and display purposes. Once a collectable cue has seen a year of play it's no longer worth nearly as much as it was when it was pristine. This would include cues such as Szamboti, Hercek, Southwest, etc. Evidence to this is a condition commonly mistaken as the "honeymoon" period, where someone's play has degraded after previously playing lights out with a new cue - this is actually due to the loss of structural playability in the cue.
If you have any of the collector's cues listed which have lost their playability - I happen to offer an exchange service on AZ. Send me your Szam, Gina, Tasc, etc. and i will replace with with a nice lucasi, scorpion, or cuetec of the highest order.
Don't thank me, always glad to help the community. :thumbup: