The latest model to do this is the all-stainless steel Diamondback Firearms SDR. Here is a closer look at what this new snub-gun has to offer. The SDR is Diamondback’s first defensive revolver.

The value of the U.S. dollar in terms of the SDR is the reciprocal of the sum of the dollar values, based on market exchange rates, of specified quantities of the SDR basket currencies. See SDR ...

Family-controlled Schroders is focused on fund management, after selling its investment banking arm in 2000. It has two classes of share: voting (SDR) and non-voting (SDRC).