How to use this tool
- Enter the best-supported manufacture date and the date when the age needs to be assessed.
- Choose the specific context rather than assuming every country or marketplace uses the same definition.
- Read the result with the limitations and keep documentary evidence for any formal claim.
How the result works
The tool calculates elapsed age from two dates. The U.S. Customs and Border Protection guidance describes antiques in its import context as over 100 years old at importation; that rule should not be generalized to every marketplace or legal question.
“Vintage” and “retro” are often used differently by collectors and retailers. A date-only result does not prove an object’s date, authenticity, provenance, or eligibility for a legal tariff category.
Frequently asked questions
Does every country define antique as over 100 years old?No. Definitions vary by legal purpose, import rules, marketplace, and collecting convention. Choose the context that applies.
Does this tool authenticate manufacture date?No. It performs date arithmetic on your entry. Use catalogs, maker records, provenance, construction evidence, and specialist advice to support a date.
Why is the assessment date separate?An object’s age depends on the date of assessment. For an import rule, the relevant date may be the date of importation.
What does the collector threshold do?It compares the calculated age with the custom number of years you enter. It does not make that threshold a legal definition.
Can I use the result in a customs declaration?Do not rely on this guide alone for declarations. Consult official customs guidance and obtain appropriate evidence and classification advice.