Stamp on golden necklace

[TinaGold]

Does any one know what these stamps mean?

 

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[bradyboy]

you say golden necklace ?
Have you had it tested?
Can we see the whole necklace, both sides?
stamping looks new, I would think the stamping crevices would show some grime, deposits in the stamp
welcome to TN

 

[Mackaydon]

Welcome to Treasurenet
On possibility is that this is:
ASP 60 is a W-Mo-V-Co alloyed PM high speed steel
as described here: http://www.matweb.com/search/datasheettext.aspx?matguid=4cc861df3e5a42179849c94ec25d9eae
Don.......

 

[A2coins]

Welcome anytime I find markings like that its plated or filled or it would be marked by carrot. I would think!!!!!!!

 

[Icewing]

750 = 18k