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 tortoiseshell
Maker:  Maker Unknown
A Boulle tortoiseshell, pewter and brass-inlaid bracket clock in the Religieuse style, the pedestal-shaped case with scrolling stems and tendrils between ivory spirally-turned columns to the angles, later movement, 17in. high.
Currently kept at: Althorp
THIS ARTWORK IS LOCATED IN:Northamptonshire
As per Althorp website. At other times by appointment through the contact point.