The Unstructed series is obsolete with the construction of GS Unicode 2.0, and the addition of all Unicode blocks into the FS inventory.  I won't delete this font for those of you who still use the original, pixelated GS Unicode (for compatibility purposes).

Though I'm only fluent in English (and somewhat Spanish), I do know the Cyrillic / Russian alphabet by heart.  While studying this script, I recalled a story my mother told me about the CCCP and the Soviets.  She talked about having air raid drills in her school years.  I'm no communist, but her story seemed fascinating to me.  I also thought the initialism was odd, as standard Russian (including Soviet Russian) doesn't have the equivalent to the Latin C.

It turns out that the Ss in Russian look identical to Cs in English and the Rs in Russian look identical to the Ps in English.  This makes the initialism SSSR (es es es ar) and not CCCP (si si si pi).

For this font:

Unicode Block: Cyrillic Extended-C (Added in U9.0)

Unicode Range: 1C80~1C8F

Font Range: 0100~010F

Unicode Link: http://www.unicode.org/charts/PDF/U1C80.pdf

For more information on USFs see "UnStructed: Syriac Supplement"