Thanks for that Iclock. These fakes certainly want stopping or the existence and identification of them publicised. It ruins a good collecting hobby for most people; and for those with large collections it potentially ruins their years of investment, as if unchecked, the suspicion of all checks and other related collecting items of being fake will ruin the confidence and the market.
There is another issue going on at the moment with potentially very well engineered and nearly exact copies of high value 1800's / early 1900's rare mining lamps. These lamps are in the value range of £500 -£5000 lamps, so are a very good income for an organised ring of 2/3 sellers into the niche market of lamp collectors, whether by private word of mouth sales or e-bay. British oil safety Lamps and British checks are in effect mainly collected in Northern parts of England, Wales and scattered other smaller pockets round this Country and the World, so the impact of this practice spreading is very serious as it affects a "small pond", unlike say militaria where it is diluted in an "ocean" of thousands of collectors world wide.
If anyone has experienced this activity or has suspect lamps, can they let us know, with the telltale signs to look for and area of country where they operate from. Gis a clue - as they say.