Just stumbled across this one on ebay, I would really, really, like to get it myself if it weren't so expensive. Oh well, maybe someone here has the cash and use for it.
http://www.ebay.com/itm/Singer-46-100-leather-sweat-band-machine-to-install-leather-sweat-bands-in-hats-/120931124474?pt=LH_DefaultDomain_0&hash=item1c280e84fa
http://www.ebay.com/itm/Singer-46-100-leather-sweat-band-machine-to-install-leather-sweat-bands-in-hats-/120931124474?pt=LH_DefaultDomain_0&hash=item1c280e84fa