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postage

1951, Dec 6-year plan issue unwmk p. 9-14.5 (6 stamps)

X	30g	dlgrn	House building
X	30g	grayblk	Electric wire construction (1952)
X	45g	red	Electric wire construction (1952)	—	—
X	90g	lilbrn	Mechanical coal mining with motorized coal Crusher (1952)
X	1.15z	viobrn	House building (1952)
X	1.20z	ind	Mechanical coal mining with motorized coal Crusher (1952)

semipostal

1951, Dec 6-year plan issue

-	30+15gr	red	House building, p. 12.5x12.75 (1952)
-	45+15gr	brn	Electric wire construction, p. 12.5x12.75 (1952)
-	1.20+0.15z	red	Six-Years Plan mining, p. 12.75x12.5 (1952)

1 to 9 of 9