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 Boulle brass-inlaid and tortoiseshell large bracket clock
Maker:  Parkinson & Frodsham
A Boulle brass-inlaid and tortoiseshell large bracket clock, the later date striking movement by Parkinson & Frodsham with circular white enamel and chased ormolu dial, the arched case inlaid with scrolling stems and mounted with chased ormolu plaques and borders, surmounted by a seated figure of Minerva.
Currently kept at: Althorp
THIS ARTWORK IS LOCATED IN:Northamptonshire
As per Althorp website. At other times by appointment through the contact point.