Vintage Set of 4 Miniature Paintings on Gold Foil 960% selling Pure Zertifikat 4 Seasons! Beautiful!

Frames measure: 3 1/2" by 4" Painting measures: 1 3/8" by 1 5/8"
Oil on 960 percent gold foil which is almost 24 K gold. Back reads Zertifikat , wertvolle, kunstiithografie, uf, echter, goldfolie, 960% . A winter, fall, spring, and summer landscapes. Each is signed on the front by the artist, but is difficult to read... ? Alfred Li?? Beautiful paintings!