Rare art deco liquor set

Another liquor set. We bought it several years ago in a small shop near our house and were told it was a set, but I do not think so. The common features is that decanter and glasses are in clear glass, have been etched and engraved with geometric motif and are further highlighted with with deco streamlines and contrasting black lacquer details. The decanter has a more elaborate engraving of flowers that are classic, the base is marked with 7. in white enamel. We were not very sure of buying it, since the set is not complete and the stopper was broken. The rims in the base of the glasses seems those so common on Leerdam pieces, black geometric decoration over clear glass is also common for their decanters but not the engrave floral motif, neither the number in white enamel. Nor glasses neither decanter have pontil. Thanks for looking and every comment is welcomed.