Hi All ,
Time for my 2 pence worth , I was hoping that a positive ID may come from those out there with far more experience in this sort of glass , so maybe they are still some answers to be found , in my opinion these glasses are fairly modern and most likely made from recycled glass , I have seen them in all shapes and forms though all carrying the same style of ship and engraving , I nicknamed them 'Blue peter ' glasses many years ago , due to the resemblance of the ships to the logo of that programme , on 1 trip to Gibraltar many years I was shown very similar items being made and very quickly and crudely engraved , these were made from recycled glass,the Item offered on ebay is in my opinion one of these , I saw the eBay item during my last visit to Amsterdam and comments were made !!!. I never did manage to find out the whole range of items they produced , it seems as if they have been making these things there for many years , all have the 1 thing in common though , the naff!! engraving of ships. although the engraving in the origional post does seem to be of a better quality than those I have seen before , mostly the ships look like the one on ebay.so maybe another answer is still needed for this 1
cheers ,
Peter.