AMPHORA Vase 25 cm high

I have an Amphora vase with an oval stamp on bottom with made in Czecho-Slavakia with the word Ampora in centre. It also has a number 20 stamped on the bottom and a 4 digit number near base rim maybe 1767 ? hand painted small. There is also marks stmped into bottom of base ( could be hand marked- but actually stamped into the pottery lightly. The vase has 6 mosaic like pnels and also 6 speckled painted panels. It is about 5cm tqll and in blues, green black. Its in very good condition. I beleive it was my Great Grandmothers but I am unsure.