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These make great at-rest Sousaphone stands, and, you can festoon the seat with a small garden of plants or other display items. Maybe they work for a 7th grader to sit in and play the Sousa, but I can't make mine work for me. The seller seems to have a boatload of them, and I suspect the prices will be low, even if the shipping is necessarily high.
http://www.ebay.com/itm/Vintage-Wenger- ... 5b0e855b3b" target="_blank