Hi Guys, picked this up today. This small group of items are all contained within a private purchase wallet. The soldiers name was Albert Gramathke. There is his Soldbuch, two feldpostbriefs letter forms and ten feldpostkartes (of two different print designs).
Even though he was a reservist born in 1880 and a married man with 5 children, by 1915 he was posted to Brugges in Belgium. His unit was Prussian II Ers Battl Reserve Infantry Regt 9
I have checked and he appears to have survived the war.
Sadly I cannot keep it, so I have to sell to cover the purchase of other items.