You will need to contact the owner's representative to arrange access.
In the case of this object this can be done by:
Writing to Nigel Shields at The Estate Office, Althorp, Northampton, Northamptonshire, Nn7 4hq
Emailing Nigel Shields:
Reporting A Data Error:
Reporting An Access Error to the HMRC:
A walnut and marquetry longcase clock
Maker:  George Cawdron
A walnut and marquetry longcase clock, the striking movement by George Cawdron, London, the square dial with silvered chapter ring and calendar aperture, the case inlaid with vases of flowers, scrolling stems and foliage, late 17th century, adapted, 82in. high.
Currently kept at: Althorp
THIS ARTWORK IS LOCATED IN:Northamptonshire
As per Althorp website. At other times by appointment through the contact point.