Vintage wood Piano Stool probably 50's early 60's. I had three and they all had a metal adjusting stem threaded to spin up or down with a wood formed seat. This one is jammed and I am not the best person to try to fix it without doing more damage. It may be as simple as being locked in the lower position and I can't find the release. But consider that it may need repaired before buying. I found 3 more ... some work, some don't - working for $79