According to Standard Catalog of Buick, 9984 were produced, at a weight of 3925 lb, and a price of $1850. It is the Master series, so has the larger inline 6 - 274 ci with 77 hp at 2800 rpm and 178 ft-lb of torque.
There's a 1927 Buick Yahoo group that might be of interest to you.
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Derek Thille
BCA #39416, CBC, MBCC #1984
76 Century Free Spirit Pace Car - "Spirit" / 66 Wildcat Custom Coupe - "Ellie" / 62 Special Convertible / 61 Invicta Convertible / 56 Special 4-door Sedan / 54 Century Estate Wagon / 52 Roadmaster 4-door / 41 Special 41SE Sedan / 29 McLaughlin Buick Model 51
2006 Buick Rainier - "Ruby" / 2005 GMC Sierra K2500 - "Max" (the hauler)
Thriller's Buick Page