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Amazon Simple Storage Service
API Reference (API Version 2006-03-01)

Versioning

By default, the HEAD operation retrieves metadata from the current version of an object. If the current version is a delete marker, Amazon S3 behaves as if the object was deleted. To retrieve metadata from a different version, use the versionId subresource. For more information, see Versions in the Amazon Simple Storage Service Developer Guide.

To see sample requests that use versioning, see Sample Request Getting Metadata from a Specified Version of an Object.