Collezione privataND (2011) – (en) 2 triangles ▲▲ (4A? →, 4AP, 4C? → 4CE, 4CY → 4CZ, 4D? → 4DW, 4E? → 4EZ, 4GT → 4 g?, 4JP → 4J?, 4K? → 4KV)
Firma:GCT(en) 2 triangles ▲▲ (4A? →, 4AP, 4C? → 4CE, 4CY → 4CZ, 4D? → 4DW, 4E? → 4EZ, 4GT → 4 g?, 4JP → 4J?, 4K? → 4KV)