Vintage earrings

I bought these earrings in an antiquities shop in Prague - ages ago - as a souvenir (I like Prague so I holiday there from time to time). I can remember I paid 500 CZK so maybe 16 EUR in todays money. They should be gold-filled with glass stones, and If I remember correctly they should be from 1930s. They are marked, probably for silver then. Unfortunately I am not able to read the tiny markings, I have to get a better loupe :)