Do all 1660tgryst knives have S30V blades?

[icarry_kershaw]

I recently bought a 1660tgryst off of eBay for a good price (under $40). But after I recieved it I realized the blade was not stamped with the S30V marking I see on other random leeks, so I was wondering if this still has the S30V steel for the blade. Any input would be greatly appreciated.

 

[poolhustler]

Mine is not stamped either. My TCKTST and TCKT are stamped S30V.

 

[hccaves]

my gryst is stamped

 

[poolhustler]

 

[KnottyEagle]

Maybe they changed it mid-way through production?