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 longcase clock
Maker:  Maker Unknown
A walnut longcase clock, the striking movement by Corn. Herbert, London, with silvered chapter ring and chased ormolu spandrels to the square dial, the case with turned columns to the domed mahogany hood partly burr-elm, 95in. high.
Currently kept at: Althorp
THIS ARTWORK IS LOCATED IN:Northamptonshire
As per Althorp website. At other times by appointment through the contact point.