Help Dating an Eley-Kynoch 16 Gauge Pinfire Shotshell Headstamp

Does anyone have the book on Eley headstamps? I’m trying to get a date range on this particular shell. I’m thinking 20th century. The top is marked for black powder and this is a pinfire shotshell. Thanks in advance.


After 1928 and before 1962, that was the years spanned by Eley-Kynoch ICI head stamp.

Thanks Eigthbore!