Hallet,Davis&Co.

Here is a quote from "Pianos and Their Makers" printed in 1911:
 
"Among the historic Boston firms, the Hallet & Davis Piano Company can trace its origin to the year 1835, when Brown & Hallet started in business. Brown was a graduate of the Chickering  factory and obtained several patents for improvements. He retired from the firm in 1843, and his place was taken by George H. Davis, the firm changing to Hallet, Davis & Company, under which title it continued with more or less success. After the death of George H. Davis on December 1, 1879, the business was incorporated. Under the management of E.E. Kimball as president, C.C. Conway, treasurer, and E.E. Conway as secretary, the concern has recovered its old-time prestige and is counted among the most progressive of the present day."
 
As you can see, there was high regard of the company at that time. The Hallet & Davis name was used until 1957. Also, it may interest you to know that the "Official Presidential Piano" under Presidents 8 (Martin Van Buren), 20 (James A. Garfield) & 34 (Dwight D. Eisenhower) were Hallets. (with #8 and #34 being Hallet & Cumston - another venture of Mr. Hallets)
Information provided by Greg Flannagan.

For more about Piano History see the Vitural Piano Museum on Square Grands
 
 

Or if you're trying to find out how much that old piano is worth, try this link to Piano World

And for somebody who is trying to sell (>$6500) another Hallet & Davis see this page