Very rare German Third Reich super armor piercing ammunition.  This ammo

is some of the most difficult to find as very little was apparently made.  The rounds

were identified by the red primer but the primer is not visible when the rounds

are in stripper clips so they put red paint on the stripper clip to identify them.

Patr. stands for patronen which means cartridges.
 
S.m.K. means armor piercing (Spitzgeschoss mit stahlkern).  H. apparently means hardened (Gehartet).   

The second line shows that the cartridge components were assembled by Polte Armaturen-u. Maschinenfabrik A.G., Werk Magdeburg, Sachsen.  It was delivery lot 178 of 1938.

Nz. Gew. R. P. (Rohr-Pulver) means hollow tubular powder.  (1.8, 1.3, 0.2) means the powder tubes are 1.8mm long, external diameter of 1.3mm  and internal diameter of .2 mm.  The powder was made by Deutsche Sprengchemie, Moschwig (Mog), delivery lot 1 of 1938.

Patrh. means cartridge case.  The "S" means brass case.  The "*" means the composition of the brass was 72% copper.  The "P" means the case was made by Polte Armaturen-u. Maschinenfabrik A.G., Werk Magdeburg, Sachsen, delivery lot 69 of 1938.  

Gesch. means bullet, made by  Polte Armaturen-u. Maschinenfabrik A.G., Werk Magdeburg, Sachsen, delivery lot 22 of 1938.

 

K stands for kern or tungsten armor piercing core, maker is Ro-Bu and is the initials for the company but the company is currently unknown. Delivery lot 22 of 1938..

Zdh. means primer (Zundhutchen).  88 means the primer cup is made from brass as introduced in 1888.  It was made by Deutsche Waffen- und Munitionsfabriken (DWM).  Delivery lot 478 of 1938.  I'm not sure what the "b" is after the lot number.