Well done John, I was expecting to last much longer than that. The Kent Mining Museum at Betteshanger was the easy part, but to correctly identify an early "Geordie" is impressive. They were used extensively in the North-East in particular and were regarded as far safer than the rival "Davy". On 16 February 1882 The Trimdon Grange colliery disaster occurred (69 men died) and the subsequent coroner's report to the House of Commons noted that: "the result of this inquiry is a further proof, if further proof were needed, that the Davy lamp affords no security whatever ... and that its employment ... ought to be absolutely prohibited". When the benefits of the two lamps were incorporated in the Clany (and particularly its development the Mueseler) the basis of the modern safety flame lamp was developed.
Over to you.