15 Rp. Strubel reddish carmine, 1. Bern printing, so-called silk paper, clich_ defect field 13: "diagonal line through head and forearm", single circle postmark Basle 24 June 57, 2 sides slightly touched, otherwise white margined, photo expertize Urs Hermann SBPV: "excellent condition", signed Common Starling, SH-no. 24 B1 mm. B