An early 20th-century Northwest Persian Heriz rug Measures: 9' x 11'8'' The best early 20th century decorative antique Persian Heriz carpets are found in their design, style and color. Older antique Heriz rugs, echoing the famous antique 19th century Persian Serapi carpets from the same district, tend to be more spacious in design or with an all-over motif in tribal, flower or leaf antique carpet designs which are seen less seldomly like this example.