Silver-plated butter dish base with glass insert and heraldic emblem

This object consists of a round silver-toned metal tray, which appears consistent with Electroplated Nickel Silver (EPNS) based on typical mid-20th-century serving ware construction. The tray features two decorative cutout handles and a raised, chased border with scrollwork patterns. At one end, there is an applied enamel emblem featuring a coat of arms: a golden lion on a red field above a blue cross with white stars, bordered by a banner bearing the Latin motto "SIDERE MENS EADEM MUTATO". This iconography is stylistically consistent with the University of Sydney. Centered within the metal base is a removable clear glass insert with a radiating 'sunburst' or starburst cut-glass pattern on the underside. The owner identifies this as a vintage University of Sydney butter dish produced by Angus & Coote; however, since no jeweler's hallmarks or maker's marks are visible in the image, this attribution remains a hypothesis subject to physical verification. The metal surface shows fine scratches and abrasions consistent with regular use and cleaning over time. No major chips are visible on the glass, and the enamel work appears intact but shows slight surface wear.

Based on the provided imagery, I am examining a silver-toned serving tray with a decorative glass insert. The user suggests an attribution to Angus & Coote and reports it as a University of Sydney butter dish. The enamel heraldry, bearing the motto 'SIDERE MENS EADEM MUTATO', is consistent with the university’s iconography. However, I cannot verify the maker via the photo as no hallmarks are visible; the attribution to Angus & Coote remains a hypothesis that would require physical inspection of the underside for jeweler's marks. From what I can see, the base appears to be Electroplated Nickel Silver (EPNS) given the surface wear and typical construction of mid-20th-century institutional memorabilia. The glass insert features a starburst pattern consistent with mass-produced tableware of that era. I note fine scratches and general abrasions on the metal, which are typical for used serving ware, though the enamel appears largely intact. This estimate assumes the item is an mid-century produced piece for the university; if marks were discovered identifying a more prestigious silversmith or if the metal was found to be sterling silver rather than EPNS, the value could increase significantly. Conversely, if this is a later 20th-century reproduction or lacks any maker's marks, the value would likely fall toward the lower end of the $20-$40 range. To confirm this identification, an in-person examination is necessary to check for stamps and verify the composition of the metal. The market for university-specific memorabilia is generally niche, with demand driven by alumni and local collectors of 'Sydneiana' or Australian silver-plate.