Don, these are Stamp Holders, the first and the second were issued by China National Philatelic Corporation.
The first is T38 first day stamp holder, value a few dollars.
The second is T69 stamp holder, I found it on
ebay, the seller overrate it at US$60, but the price of China items are rised very well, an enthusiastic buyer maybe will buy it:
http://www.ebay.com/itm/China-PRC-1...em3cb5d31f9c The third is T44 stamp holder, issued by Beijing Philatelic Corporation, the value is about US$50. Three years ago realized about US$20 on a China auction site:
http://www.99yq.com/xiangxi.aspx?cpid=12290 Hope this will helps.
ZhangCheng