It has been common knowledge to informed collectors that many times the finest and rarest art glass is found unsigned.

It has been common knowledge to informed collectors that many times the finest and rarest art glass is found unsigned.

有知识的收藏家都知道，很多时候，最精美、最稀有的艺术玻璃是在没有签名的情况下发现的。

-- James Lafferty 詹姆斯·拉弗蒂