It's marked "confidential" and it has a limited circulation.

这是一份上面标有“机密”并且只限少数人参阅的卷宗。

youdao

With Shanghai world expo licensed merchandise security labels, these commemoratives are of novel design, sophisticated technology. The limited circulation is 8888.

此纪念章设计新颖，工艺精良，配有上海世博会特许商品防伪标签，限量编号发行8888套。

youdao

With Shanghai world expo licensed merchandise security labels, these commemorative silver bullion are of novel design, sophisticated technology. The limited circulation is 38888.

此纪念银条设计新颖，工艺精良，配有上海世博会特许商品防伪标签，限量编号发行38888套。

youdao

At present, local currencies don't affect the conventional economy--our dollar economy--much, because they have such limited circulation.

FORBES: Magazine Article

And the circulation boost from publishing scandalous pictures is limited.

ECONOMIST: Those pictures