faithofamustardseed

Hello! I am going through my father in law's estate since he passed recently. He was a leather smith and acquired quite a lot of machinery! Singer Leathercraft 29K70 is the serial number - having trouble finding its value and worth online. Does anyone have any good resources on its value and if it is rare? What about selling it - if it works well and is mostly functioning - what price would you appraise it at?