Understanding the 925 RSE Mark on Jewelry: What It Means

Question
I bought a pair of earrings from a thrift shop this morning and they appear to be of decent quality, especially for the $2.00 I paid for them.  They are marked 925 RSE and I started researching.  I noticed a question you answered for someone else and appreciated the information given there.  I googled the mark and only found a whole bunch of other people asking the same question regarding the RSE.  Everyone seems to be in agreement that it is a Maker's mark.  Most of these pieces of jewelry are described as part of an estate, an older item or rare looking item, so one thing I am wondering is if these may be old?  If I only found one or two questions, I would just assume maker's mark and not worry about where they are from, but with so many questions, it seems like it is a fairly common mark for people to find and I wondered if there was a way to research further what the mark means?  Who made this jewelry? Where it came from? That sort of thing.  When I saw them for $2, they were marked silver, but I could tell they were a better quality and checked to see if they were white gold and had been mismarked. (A few years back, I paid .50 cents for a pair of 14K white gold, .25ct diamond earrings that were mismarked silver.  That was a great day!) I wonder if they are gold plated.  There are several diamonds in a pattern of 3 flowers in a row and I am almost positive they are real.  Any info would be greatly appreciated.  If you could even tell me how to research this further? Any websites or books that might be helpful?
Thank you so much for your time!
Felicia

Answer
Hi Felicia. Most jewelry markings follow certain marking conventions or schemes (ex. 14k-18k to designate gold and so on), but since these are mere markings and can be made by almost anyone, it can't be considered as definitive evidence of a piece's age/manufacturer. "925" is commonly used to indicate sterling silver (925 per 1000), but RSE I am not familiar with. I did a bit of research and it is very possible that the initials "RSE" means it was made by a Robert Seemann, from Herfolge, Denmark.  

It would be good if you could send a picture so we can better identify the markings.

Here are also some links which you might find helpful:

http://www.modernsilver.com/MYSTMARKS.html
http://www.silvermakersmarks.co.uk/Makers/Birmingham.html
http://www.925-1000.com/denmarkR.html

Regards,
Jonathon
http://www.brilliance.com