Hello. I am trying to get information on a Tiffany necklace that was my Grandmother's. She passed it on to my Mother...I don't know when but I always remember it being in her jewelry box. She gave it to me when I was 30, I'm 62 now. I'm wondering about age, designer, etc. I am planning to sell it and want as much good information I can offer. On the back of the box clasp it is marked "K18, ITALY, TIFFANY". It is almost 1/2" wide, 15.5" long, and weighs 50 grams. Following are some photos. Any information greatly appreciated....oh...and price suggestions. Thank you!!
Thanks for all the help so far. I know that the "Tiffany" mark is different...I thought it might be a style of an older stamp. Being marked "Italy", I am surprised it doesn't say 750 vs. K18. The 1940s sounds about right. I tried to get a couple of better photos. I looked more closely at the inside of the links. I can see where they come together, in some places, but then on the side of where it comes together it looks solid. I had to use a magnifying visor to really see it, but the camera picked it up. During the Depression my Grandmother was ordering dresses out of NYC...she was lucky. She was a millionaire when that used to mean something, so I didn't think it would be a "fake" of some sort. So if it isn't Tiffany, is it's value more along the lines of scrap gold pricing? 
I wouldn't have told you if you brought it to my shoppe for cleaning either. I wouldn't want to degrade your experience visiting my little store!
But things are different here. I can teach and this post could remain in archive for later explorations. So let me tell you a little more about your beautiful and expensive nacklace
"K18" was used in defiance of English language. More reason be after stampage of 18K, the number 1 is standing out to the left and is vulnerable to any " wrongful " enhancements among other reasons
These links are not solid. To say it more accurately, the whole necklace is not solid. These are heavy 18K sheet metal foldings and the links are paste soldered and placed in kiln to melt. So they look and feel very solid
Here is a sample of American workmanship of about the same era. Americans did the same job but used different colors of gold so workmanship be shown off by exploiting the technique. Meaning; eyes will see what has been done
This is one of my rarest pieces of the era back in bottom of the safe somewhere, I need to post this for sale some time!
It has been tested and it is 18K. The 40s make sense as my Grandmother owned it for awhile, before giving it to my Mother. I was born in 1959 and I always remember it being in my Mother's jewelry box...well before the 70's. Grandma did travel a lot.
