Old White Horse, Mackie's Ancient Brand

Old White Horse, Mackie's Ancient Brand Could someone please help me identify this unopened bottle of Mackie's Ancient Brand scotch whisky distilled by white horse, with lead cap, flip top and hand made paper box. It's a 4/5 square brown bottle imported by Browne Vintners of New York. I have exhausted all my resources, including the Internet. Though The Scotch House in Beverly Hills had informed me that it could be extremely rare. In that mackie had been the inventor of the screw top in 1924 could this bottle have been produced prior to that date? Also could the term Ancient Brand be in reference to a former means of distilling? Is it possible to find out how many had been produced and when? I would like to put it up for sale if in fact there is any value attached to it. Thank you JM Ps. any help would be greatly appreciated, or if you may know of anyone who may be of help it'd be greatly appreciated Need be I could send some jpgs of the bottle