Spain Return Letter Stamp (Unknown Value), 1873 Small 320×316 Medium 640×632 Large 1024×1011 Download Tiff Original 2430×2400 | (1.4 MB) Description Spain Return Letter Stamp (value unknown) from 1873 Keywords European return letter postage, European return letter stamp, foreign return letter postage, foreign return letter stamp, return letter postage, return letter stamp, Spain return letter postage, Spain return letter stamp, Spanish return letter postage, Spanish return letter stamp Galleries Spanish Coins and Stamps Source: Scott Stamp and Coin Co. The International Postage Stamp Album, 1894 Edition (New York: The Scott Stamp and Coin Co., Limited, 1893)