Hello
I have a publication of Liege's Test Bank "Official Hallmarks of the Proof House for Firearms (1672-1968)" where the ELG punch appears as a mark of acceptance from 18.3.1811 until the year 1898, and still. There is the same punch, but smaller, as a mark of acceptance from 8.9.1846 to 11.7.1893. E. The ELG punch with the crown appears as a mark of acceptance from 11.7.1898 until 26.2.1968.
Affectionately
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