Does it have a crown above the letters? I have one like that, and I have determined that it may represent Crown Potteries Company, who was in business in America in the early 20th century. I am still researching it now for clarification.
LC usually stands for Liz Claiborne.
It is the creator and orignal engraver of the coin.
The initials SWL mean Safe Working Load
These are the designers initials.
JSD are the makers initials EP stands for electro-plate
sterling
That means it was made in China.
Millimolar
If you mean the international car registration then it is Switzerland
KC is the initials of his FaceBook account, apparently.
FG are the initials of Frank Gasparro, he disigned the reverse of the coin. Gilroy Roberts did the obverse.
I hope you mean 'What do the initials 'UN' mean - United Nations.