ianhouts I have a plain bottle dug up near the docks in Portsmouth which has NMM pressed in the base of the bottle. I would be grateful if anyone could help in explaining what the letters refer to. Many thanks
Chris As always, a photo of the bottle would be helpful. In this case, the country you found the bottle may help someone ID it. I did look through "Bottle Makers and Their Marks" but found no listing for NMM