Rare Palestine Mandate postcard used 3m pictoral stamp light BROWN ribbed paper

DISCOVERY: 3 mils Mandate Pictorals stamp in apple green on undocumented vertically ribbed thick light BROWN paper, as printed matter postage tied to 14 SEPT 1931 postmarked picture postcard (Old City Jerusalem - Eliahu Bros) sent from JERUSALEM to ITALY; as bearing a message with 5 words or less, charged as surface mailed printed matter. The stamp is compound perforated horizontally (13.5 at bottom & 13.25 at top; 14.50 vertically). Ben-Arieh certificate enclosed.