Hello,
I have recently found a authentic pre 1900s Gretsch rope tension field drum (pic attached) in Moose Jaw Saskatchewan.
I suspect it is an original because it has a banjo tuner knob instead of round machined knob for the throw off.
Its exact same as the drum on this link worthpoint that was appraised at $2000.
https://www.worthpoint.com/worthopedia/pre-early-1900s-gretsch-marching-178902411
any details and thoughts of value would be appreciated.