HOW OLD IS MY PIANO?

FREE PIANO IDENTIFICATION & SERIAL NUMBER LOOKUP TOOL

How We Date and Valuate Pianos: Methodology and Sources

How Old Is My Piano helps owners identify the approximate manufacturing year of an acoustic piano from its maker and serial number. The lookup system is designed to give a useful, plain-English result while being honest about the limits of historical piano records.

Some manufacturers can be dated very precisely. Others changed ownership, factories, numbering systems, or production methods over time, so the most accurate result may be a production-year range rather than one exact year.

How the Lookup Works

The system compares the piano’s manufacturer and serial number with our continuously maintained serial-number database. Where a manufacturer used different numbering systems for grand and upright pianos, the lookup also uses the piano type to select the correct record.

The goal is to identify the year or closest supported production range—not to guess based on cabinet style, finish, or how old the piano appears.

How our Evaluation System Works

Unlike simple online calculators that estimate value from only a piano’s age, brand, and general condition, the Piano Heritage Engine evaluates many of the same factors a knowledgeable piano professional considers when estimating real-world market value. It identifies the manufacturer, age, piano type, size and—when available—the specific model, then applies valuation data calibrated for that particular class of instrument. It accounts for quality tier, depreciation, current replacement value, condition, marketability, and the important difference between dealer-retail and private-party values.

The engine also recognizes situations that generic calculators cannot handle intelligently. Rebuilt and partially rebuilt pianos are evaluated according to the extent and age of the work, with different treatment for premium instruments and different sizes of grand pianos. Player systems are evaluated separately according to type, brand, age, and the underlying value of the piano. Behind the scenes, thousands of manufacturer, model, serial-number, pricing, and depreciation records work together through a carefully tested hierarchy of valuation rules. The result isn’t a generic percentage applied to an old piano—it is an estimate designed to reflect what this particular piano is realistically worth in today’s market.

Sources and Research Method

Our database is built from manufacturer serial-number records where available, established historical serial references, period documentation, and technician research into individual brands and production eras.

We also account for facts that can make a simple serial-number chart misleading, including changes in ownership, factory relocation, imported production, private-label manufacturing, and brands that reused or shared serial-number systems.

Every manufacturer is handled according to its own known history. A serial-number rule that works for Yamaha, for example, may not work for Baldwin, Kimball, Wurlitzer, or an older American stencil brand.

Prefixes, Piano Type, and Other Important Details

A number inside a piano is not always its serial number. Pianos can contain model numbers, patent dates, casting numbers, cabinet numbers, action-part numbers, and player-system numbers.

Some manufacturers also used letter prefixes. Depending on the maker and era, a prefix may be part of the true serial number, a factory or production code, or information that should not be included in the serial-number lookup. Our database uses maker-specific rules for known prefixes rather than treating every letter the same way.

For certain manufacturers, identifying whether the piano is an upright or grand is equally important because the two types may have separate serial-number sequences.

How Precise Is the Result?

When reliable year-by-year production records exist, a piano can often be dated to a specific manufacturing year. In other cases, available records support only a close production-year range or a broader era, yet in a few cases, the date can be pinpointed to a specific month and year.

A result is only as reliable as the information entered. The most common source of an incorrect result is a misread or misidentified number—not a problem with the underlying serial-number range. Before relying on a result, confirm that the number was stamped by the manufacturer and is not a patent date, model number, or small part number.

What a Serial Number Cannot Tell You

A piano serial number can help establish when the instrument was built and, in many cases, its general production era or factory context.

It does not normally establish the original owner, original retail dealer, exact day or month of manufacture, cabinet veneer, optional equipment, restoration history, or current market value. A serial number also cannot show whether a piano has been rebuilt, restrung, refinished, or damaged since it left the factory.

Corrections and Ongoing Updates

Piano history is not perfectly documented. Some makers left incomplete records, changed their numbering practices, or produced instruments under multiple related names. When reliable new information becomes available, we update the database.

If your result appears inconsistent with the name on the piano, its serial number, or its known history, please send a clear photo of the fallboard, the serial number, and the area of the piano where it appears to joe@burdandsons.com. Clear documentation helps us investigate unusual cases and improve future results.

About Joe Kemple

How Old Is My Piano is reviewed by Joe Kemple, Master Piano Technician and owner of Burd and Sons Piano Service.

With 39 years of hands-on experience servicing, identifying, evaluating, and researching acoustic pianos, Joe combines historical serial-number research with the practical knowledge needed to recognize when a piano’s maker, era, construction, or visible markings require a closer look.

How We Date Pianos