This is an original LH, (drivers side) door rear, glass lock end, run channel.  This channel is uniquely Thunderbird and was used on all 1955  Thunderbird with both manual or power windows.  The last photo is for reference only and shows the location of the channel (#21508). See my eBay Store for the opposite side channel run and the attaching brackets. We charge actual shipping only, are glad to combine shipping on several items or your welcome to pick it up. Thanks!