need some help with hallmarks on pendants.

[jeff0172]

found 2 pendants today one marked 925 su H1 i know the 925 means 92.5% silver but what does the H1 mean? there are pink stones in it could it be talking about the stones? also the other pendent is marked 925K? what does the k mean? any help would be greatly appreicated i will post some photos when my camera charges

 

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[Bryanhashemi]

i believe su is the company ...Silver Unlimited. the K could be the date