German Democratic Republic 5 Year Plan Fake Or Real

I studied Stamp Smarter identification tool for German Democratic Republic 5 year plan 1953/59 and Stamp collecting world DDR definitives of 1953-1959. Its fair easy to tell litho vs. typo printing.

My lithograph stamps have the 4 correct markers except for the E directly above the A.(that is suppose to be typo printing) Litho is supposed to be A between the HE. As well as 5 touches the left compass ( typo ) , 5 dose not touch the compass (litho)
It has the horizontal DDR posthorn water mark on back.

The
question is; real, fake or other variety?

I make them Sc # 163 and Sc # 233A
according to my home made graph

(Needs confirmation)
I have been known to make mistakes
Created via 1985 MSWorks
Select value and just move across to confirm design and print type

Your left specimen is likely Mi 370XIIN, a 1957 reprint for philatelic purposes. Even the cancelation is printed and not genuine (there are about 20 different cancelations, from Cottbus to Leipzig to your Rostock). The right specimen may be Mi 371 XIIN, also a '57 reprint.
For German stamps of any era, you sometimes have to get better references than websites.

Yes they are real . do you have a value?

Subject to confirmation

1.All unused stamps are originals
2. Reprints of the 1st through 4th issues, (posthorn wmk) occur with press printed cancellations (Centred on a block of 4)
but hand stamped cancellations also exist.

Reprints of the 5th through 7th issue (Quatrefoil) do not exist

Cancellations applied to reprints
cottbus
dresden
erfurt
gera
halle
karl-marx-stadt
leipzig c
leipzig O
magdeburg
potsdam
rostock
shwerin

Your right hand stamp will be pmk ROSTOCK b

I make it 41 differing press-printed cancellations

Bib: Jay Carrigan

Thank you sir.

Question on DDR and post horn water mark is it supposed to run vertical or horizontal? and what is sideways water mark?

Your left hand Pmk is dated 9.6.56-18

Your right hand Pmk is dated 1.1.56-13

I could of swarn it was only 5 mm.

sideways wmk is vertical