Vintage Surveiller La Bouille 'Pot Watcher' Disk

This is a vintage kitchen utensil known as a 'Pot Watcher,' designed to be placed at the bottom of a pot to prevent liquids like milk or pasta water from boiling over. The item consists of a small, white kiln-fired ceramic or heat-treated glass disk with a recessed center. The disk features an embossed decorative element in the center—likely a rooster or similar kitchen motif—and the words 'POT WATCHER' embossed around the inner rim. It is presented in its original retail packaging, which features a printed paper header card stapled to a clear plastic bag. The header card is titled 'POT WATCHER KEEPS POTS FROM BOILING OVER' and includes dual-language instructional text in English and French (Surveiller La Bouille), indicating Canadian manufacture. Physically, the disk appears roughly 2 to 2.5 inches in diameter. The packaging shows significant signs of age and wear; the paper header is yellowed with foxing, staining on the lower right corner, and multiple creases. There is a hole at the top where it was pinned to a surface. The plastic bag shows some clouding and internal debris. Despite the packaging wear, the ceramic disk appears intact without visible chips or cracks. Based on the typography and material style, this item likely dates from the 1960s to the 1980s.

I have conducted a visual examination of the 'Pot Watcher' disk, likely manufactured by a company like Jordon or a similar housewares distributor during the late 1960s to mid-1970s. The item is authentic to the period, evidenced by the specific 'Surveiller La Bouille' bilingual branding common in Canadian retail during the implementation of official bilingualism. The ceramic disk itself remains in excellent, unused condition, which is a significant factor as these items often suffered from thermal shock or chipping during active kitchen use. However, the original 'New Old Stock' (NOS) packaging shows notable degradation, including foxing, water staining, and structural creasing. While the presence of original packaging generally increases value for collectors of mid-century kitchenalia, the visible moisture damage to the header card limits its display appeal. The market for vintage 'boil-alert' devices is relatively niche; they are frequently found in secondary markets like eBay or Etsy. Similar milk-saver disks without original packaging typically sell for under $10, while those in pristine vintage packaging can fetch up to $25. The current market demand for such utilitarian kitchen items is stable but modest. Please note that this appraisal is based on image analysis alone. A physical inspection would be required to rule out hairline fractures in the kiln-fired material not visible through the plastic. Full authentication would involve verifying the exact manufacturer through the UPC or distributor catalog records if available. I cannot definitively confirm the material composition (glass vs. ceramic) without a tactile density test.