Unknown Russian Civil War Banknote

Hello all, 

I have an unknown banknote that is I think from Russia since it is dated as 1918. It is measured at 149 x 93. 

Hope to hear what this is!

Russian Civil War Issues - North Caucasus - Pyatigorsk City

5 roubles 1918

Issued by Pyatigorsk District Council

Kardakov's catalogue #: 7.38.35

Didn't find it on Numista