Napkin rings what does the '1' indicate

[simonrdc]

Hi can anyone tell me what the '1' indicates and whether this is a genuine hallmark as it doesn't look like it follows convention to me although the Leopard head and Lion look authentic
Thanks anyone

[AG2012]

Hi,
That`s date letter ``l`` for 1906, London.
Regards

[simonrdc]

Thanks does it look like a genuine hallmark as I thought the date foillows the assay office mark or doesn't that matter? Very much appreciated.
Regards

[AG2012]

Authentic, don`t worry.

[simonrdc]

Thanks great help
regards