glass decanters

just wondering what the mark is on the bigger one its about 10" high the smaller about 6 1/2 " high , they look like they refract the light slightly but may just be the way the glass is cut and its not just a thud when you tap them little bit of a ring

 

Not cut but moulded. 1970s inexpensive glass. Over here those came in silver plated stands.

 

That plastic stopper is a giveaway. 1970s and latter. Machine blown but where I do not know.

 

with cut glass u can feel the sharp edges....these are rounded !

 

cheers for the replies was unsure