The Orders of Red Star -
Duplicates, Mint Errors/Oversights, and others.

DUPLICATE ORDERS: Orders of later type/variation with serial numbers of earlier type/variation.
ORDER DESCRIPTION		Type	Variation	Example		Comments
Duplicate sign - 'Д'	Method of writing 'Д' and serial number			Serial Number	Pics
With 'Дубликат'	Engraved word "Дубликат" and S/N	T6	HDa	12949 ©AT		"Duplicate" Orders - orders, issued in exchange for lost or stolen awards. Such exchanges took place at different times, hence, the order issues in replacement, could be of any variation. Considering the sporadic nature of their emergence, we view duplicate orders as a single separate variation "D" ("Duplicate"), but with sub-variation, reflecting differences, specific to duplicate orders (like style of writing serial number, duplicate sign 'Д' and so on). In other words, order, described as "MHD" would be a duplicate, which is missing a 'Д' ("M"=MISSING), and serial number is hand-engraved ("H"=HAND_ENGRAVED).
With 'Д'	Engraved 'Д' and S/N		HD	367289
	Stamped 'Д' and S/N 'Д' stamped above S/N		D	457641
	Stamped 'Д' and S/N 'Д' stamped below S/N		D	2113362
Without 'Д'	Engraved S/N	T4	MHD	7399 ©WB
	Stamped S/N	T6	MD	839132
	Stamped S/N large serial number digits		MD	972665 ©SO

ORDERS WITH MISSING MINTMARK: Orders with either hand-engraved mintmark, or missing altogether.
ORDER DESCRIPTION		Type	Variation	Example		Comments
Mintmark	Secondary differences			Serial Number	Pics
Without mintmark	With screwpost base	T4	M	-	-	Absence of a mintmark on orders of T2-V1 ("Transitional") was mandatory, however, on all other orders missing mintmark would indicate a mint oversight, or so-called technological error. For such orders, their actual variations are irrelevant, as they could be observed in any variation. They should really be viewed as a single separate variation "M" (MISSING), and possibly "H", if the order was "caught" and manually corrected (HAND-ENGRAVED).
	Without screwpost base	T6	M	934527
Hand-engraved mintmark	'мондвор' mintmark above screwpost	T3	MH1.1	8547 ©ER
	'мондвор' mintmark below screwpost		MH1.2	2011	-
	'монетный двор' mintmark	T6	MH2	2137072 ©YS

SPARE ORDERS: Orders with serial numbers, that correspond to earlier type/variation.
ORDER DESCRIPTION	Type	Variation	Example		Known serial numbers or comments
			Serial Number	Pics
"Spare" type orders are those orders, which were made from the unnumbered orders of previous issues, or reusing earlier manufactured orders with minor factory defects (such as enamel defects, soldering defects, etc.), that were later corrected. However: - "spare" orders are always isolated, limited specimen event, - "spare" only appears within runs of the same mint, - "spare" comes up after several issues.	T4	S	458649		Reappearance of the late numbered orders with screwpost base is due to the fact that all of them undergone repairs of the screw, at the mint. (!) Actual variations that "spare" orders are made from are irrelevant, as they could be observed in any variation. They should really be viewed as a single separate variation "S", but with sub-variations, just to reflect orders' base variation.

Other Orders: Mint oversights, technological mint errors, etc.
ORDER DESCRIPTION	Type	Variation	Example		Known serial numbers or comments
			Serial Number	Pics
S/N is re-engraved at the mint	T5	O	28731 ©GL
2 'монетный двор' stamps	T6		252958 © IT		252958
Word 'ДВОР' is missing			706734		706734
Word 'ДВОР' is half-imprinted			735070		706183~2146399
Center medallion is held with 2 rivets			971329		971329
Engraver error - S/N is missing a digit			212683 ©YS		212683
Engraver error - S/N has an extra digit			31155455 ©PV		31155455
Example of minting error			747141 ©VB		-
S/N is engraved by 2 different engravers			1150990 ©GD		1150990
Double-struck 'монетный двор' mintmark			800065		-
Displaced mintmark			118780		118780,122324,122609,135928
Mintmark at 9 o'clock			2166525 ©GD		2166525
Engraved on reverse: Душечкина К. К.			2099035		2099035