4-piece brass writing set

A 4-piece brass writing set. Most of the items feature a simple classical urn design with finials reflected either in the overall design of the piece or on the handle. The pieces are: 1.) an inkwell with a lid and white porcelain liner on a circular base that serves as a tray, 2.) pen tray in an oval shape with two round feet, 3.) letter opener, a.k.a., paper knife, 4.) marking stamp with an impression side that's still smooth. This set appears to be among the objects on display in a photograph in the Institute's collection of images (see: identifier E 37).