This Vintage Nappy was made between 1947 and 1954 by Duncan Miller Glass in their famous "Canterbury" pattern.
Duncan Miller Canterbury complements others of that period such as "Candlewick," "Teardrop" and more.
Listed in the book Elegant Glass: Early, Depression and Beyond, 2nd Edition, 2004, by Debbie and Randy Coe, on pages 39-41.
The extremely clear crystal glass rings nicely, indicating post-war lead content, to improve clarity. The age is further confirmed by the soft blue white glow under long wave UV, and only a very very soft yellow glow under short wave UV.
In excellent condition, with no chips, cracks, or repairs, and just a few scratches which are not obvious.