The holder materials are, of course, identical to those that we now use in the standard NGC coin holder.

固定器使用的材料，当然和我们NGC的固定器是一致的。

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The utility model does not need to replace other devices when the COINS are transformed. The coin sealing device can quickly seal the coiling COINS with different diameters by a standard mode.

本实用新型能够实现在硬币变换时不需要更换其它装置，实现了对不同直径的系列成卷硬币规范化快速封口。

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Except for twenty-five years (1797-1821) the British pound was on a gold-coin standard for two straight centuries (1717-1914).

FORBES: Gold, Reagan and the Reds: From Degraded Dollar to Downgraded Debt

The U.S. remained on a gold-coin standard, except for brief periods (1862-1879) for more than a century (1792-1914).

FORBES: Gold, Reagan and the Reds: From Degraded Dollar to Downgraded Debt

Under the classical gold-coin standard (1717-1914) private banks and central banks alike issued currency convertible into a fixed weight of gold, with balance sheets consisting primarily of gold coins and short-term loans denominated in local (but gold-convertible) money.

FORBES: Gold, Reagan and the Reds: From Degraded Dollar to Downgraded Debt