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What Year Was My Boston Piano Made? (Serial Number Lookup + Guide)

DIRECT ANSWER

To find the year your Boston piano was made, you must use the Boston-branded Piano Company serial number system, which is designed by Steinway & Sons and manufactured by Kawai.

Most Boston pianos can be dated to a specific year using their serial number. However, accuracy can vary slightly depending on:

production era (early launch period vs modern production)
manufacturing partner (primarily Kawai Musical Instruments factories)

Boston pianos are generally consistent and reliable for serial number dating, generally consistent, though structured differently from legacy American systems like Baldwin.

HOW BOSTON SERIAL NUMBERS WORK

Boston pianos use a structured serial numbering system tied to their manufacturing process.

In most cases:

serial numbers increase sequentially over time
numbers correspond to production year ranges
the system applies across both grand and upright models

However:

Boston pianos are manufactured by Kawai under contract
serial numbering reflects Boston branding, not Kawai’s internal serial system
some variation may occur depending on factory and production batch

This means:

your serial number can usually be matched to a specific manufacturing year
it will NOT encode model information or detailed specifications

HOW TO FIND YOUR BOSTON PIANO’S SERIAL NUMBER

Boston serial numbers are stamped into the cast iron plate inside the piano.

BOSTON GRAND PIANOS

lift the lid and look inside the piano
locate the serial number stamped on the plate near the tuning pins or bass strings
it is typically clearly visible without disassembly

BOSTON UPRIGHT PIANOS

open the top lid or front panel
look inside toward the cast iron plate
the serial number is stamped onto the metal frame
a flashlight may be required

Important identification note:

The serial number is always stamped into the metal plate. Do not use model numbers (e.g., GP-178, UP-118) as these are not serial identifiers.

WHAT YEAR IS MY BOSTON PIANO? (WHAT TO EXPECT)

After entering your serial number, you can typically determine:

the manufacturing year of your Boston piano
its general production era
its position within Boston’s overall production timeline

However, the serial number may not provide:

exact production date (day or month)
specific factory location in all cases
detailed model configuration or features

This is because Boston serial numbers track production order rather than encoding detailed specifications.

BOSTON PIANO SERIAL NUMBER LOOKUP TOOL

Use the tool below to estimate your Boston piano’s manufacturing year.

STEP 1: SELECT THE MANUFACTURER

Important note for Boston pianos:

Select “Boston” in the manufacturer list
Do NOT select Steinway or Kawai

Manufacturer

STEP 2: ENTER YOUR SERIAL NUMBER

Serial Number

STEP 3: THE RESULT

COMMON BOSTON SERIAL NUMBER MISTAKES

Common issues when identifying Boston piano age include:

confusing the model number (GP, UP series) with the serial number
entering numbers from paperwork instead of the stamped plate
misreading digits due to glare on the metal plate

If your result seems incorrect, verify the number directly on the cast iron plate inside the piano.

BOSTON PIANO HISTORY

The Boston line was introduced in 1992 by Steinway & Sons as a mid-tier brand positioned between Steinway and entry-level instruments.

Boston pianos are designed by Steinway but manufactured by Kawai Musical Instruments, combining Steinway design principles with Kawai’s large-scale production capabilities.

Key characteristics of Boston pianos include:

wider tail design on grand pianos for increased soundboard area
scaling and engineering influenced by Steinway design philosophy
consistent build quality due to centralized manufacturing

Production has remained relatively standardized compared to older American brands, which makes Boston pianos:

easier to date than fragmented legacy systems
generally consistent in serial interpretation across models and years

Boston