Hi Mark,
Look closely at the crown in Boarders Away it only has 3 lobes the Swedish one has 4.
I have done a bit more research. If you look up the online collection in Swedish Marine museums there are a number of 1804s with this crown. Interesting that their other cutlass models do not have it. It may indicate that these were manufactured in Britain and sold to Sweden to help arm them against Russia (history repeats, I guess).
https://digitaltmuseum.se/011024801576/huggare
I was correct about the Norwegian 1804 in SSS. These were produced at Kongsberg 1817/18 and were copied from captured British 1804s. The Greenwich museum has it online now - I believe the same sword as in SSS. It has markings on the hilt - no Swedish crown.
https://www.rmg.co.uk/collections/ob...c-object-78687
So much more to the history of the 1804!!
CC