8x56R ident help

What is the 8x56R on the left? On the right is standard 8x56R M30S?

Portugese Kropatschek 8x56R

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Thanks!

Sometimes not easy

hier L to R

2 x 8 x 56r Kropatschek 1918 & 1919 classics
1 x 8 x 58r Krag K& C made, plat base (no current " for me"contract ?)
1 x 8 x 60r Kropatschek Contract SFM GG

Bsrg, Dan

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