Yes, it's a Buick
The 1919 Buick Series H-45 (H45) was a model of Buick's Series H line of cars, powered by a 241 cubic-inch, 6-cylinder overhead valve engine. Unlike a traditional speedster, the H45 was offered in various body styles, most commonly a Touring car, though a Torpedo body style was also produced. These cars featured significant power for their time and were a notable product of Buick's reputation for quality engineering and its early adoption of the overhead valve system.
Key Features
Engine: 241 cubic-inch inline 6-cylinder engine.
Valvetrain: It featured Buick's notable overhead valve system.
Horsepower: Rated at approximately 27.3 horsepower.
Transmission: A 3-speed manual transmission was standard.
Body Styles: While the "H45" designation refers to the chassis, it was available in different body styles, including Touring and Torpedo models.
Legacy: The H45 was a modern and powerful vehicle for its era, offering a strong alternative to cars like the Ford Model T, and it was a well-regarded part of Buick's history.
In all likelihood, and based on the above information, the car above was custom built as a racer, or speedster and used the H45 chassis as a starting point. "H45" was Buick's chassis designator, and not a particular model. I suspect the above car could be a one-off, and built for one purpose in mind and that would be one built for the race track. And having numbers on the side would be a hint :)
Yes, it's a Buick
The 1919 Buick Series H-45 (H45) was a model of Buick's Series H line of cars, powered by a 241 cubic-inch, 6-cylinder overhead valve engine. Unlike a traditional speedster, the H45 was offered in various body styles, most commonly a Touring car, though a Torpedo body style was also produced. These cars featured significant power for their time and were a notable product of Buick's reputation for quality engineering and its early adoption of the overhead valve system.
Key Features
Engine: 241 cubic-inch inline 6-cylinder engine.
Valvetrain: It featured Buick's notable overhead valve system.
Horsepower: Rated at approximately 27.3 horsepower.
Transmission: A 3-speed manual transmission was standard.
Body Styles: While the "H45" designation refers to the chassis, it was available in different body styles, including Touring and Torpedo models.
Legacy: The H45 was a modern and powerful vehicle for its era, offering a strong alternative to cars like the Ford Model T, and it was a well-regarded part of Buick's history.
In all likelihood, and based on the above information, the car above was custom built as a racer, or speedster and used the H45 chassis as a starting point. "H45" was Buick's chassis designator, and not a particular model. I suspect the above car could be a one-off, and built for one purpose in mind and that would be one built for the race track. And having numbers on the side would be a hint :)