I didn't mention it in my previous contribution, but was/am pretty sure the second signature reads Strömberg as well, although it looks differently - and IS different, e.g. Strömberg vs. Strömbergshyttan. If you look at the history, Edvard Strömberg was producing glass before he founded Strömbergshyttan - and now there seems to be a new Strömbergshyttan (relation unknown). The "Strömberg" signature could be Edvard, either before he founded Strömbergshyttan, or even afterwards - whilst the first signature might be from the "new Strömbergshyttan". Now - if two different people signed a paperweight at different times and with different tools, the signatures will look different ;-). The numbering system (letter plus three numbers) is identical. The only possibly surprising fact is that the designs look so similar.