For your consideration, I'm listing the collectible C-20, C21, and C22 China Clipper plate blocks from 1935 and 1937, Mint Never Hinged with clean original glue. These blocks are all well centered, problem free examples. Please view detailed scans for condition and centering. Quick free USPS First Class shipping, U.S. only please, as I do not ship internationally. Retired hobby collector here taking an opportunity to assist a longtime Buyer / Collector in liquidating some inte...resting U.S. and foreign stamp lots. I'm planning to list a few worthwhile, interesting items per week from a large assortment of random items.