Yes, the piano hinges are pretty unique, and the combination of the front doors with mixed piano and conventional, and the rear doors with piano hinges-only is even more unique. Plus the split windshield suggests mid-20's not late '20's when most cars had one piece windshields, so yes it points to 25-27 at the latest. It appears that a feature of the Whippets is suicide front doors, which this car did not have. Then there is the lack of cowl lights like all the Nash's had and add in the twin belt lines and it gets even more complicated. Looking thru the Standard Catalog of American Cars the only car that comes close is the 1923-25 Cole, a competitor to Cadillac, in which some models had the combined piano/conventional front door hinges, piano style rear door hinges, and twin belt lines. But all Coles from 1916-25 had Northway V-8s, so why the indented firewall in this car that looks to be for an inline engine? Is it a some model of Cole, Cadillac, Nash, Essex, Whippet or some other more common make? Hopefully someone on the forum knows. Thx for all the responses, Richard