Sniper Patronenkasten 300 s.S. Anschuß 'cg 1944'

Here we have an exceptionally rare, if not even unique late-war small wooden 'Patronenkasten 300' model ammo box - which once held 300 rounds of the highly prized 7.92x57mm s.S. Anschußpatronen. 
 
These rounds were loaded to the highest standard of any German 7.92x57mm ammo produced during the war and developed, initially, to test rifle accuracy. However, it's unsurprising that some frontline Scharfschützen (snipers) were eventually issued with such rounds later in the war, as proven by numerous Soldbuch records. 
 
Given it's type, condition and date; it is almost certain that this box once comprised such a delivery - with the label denoting issue in 1944. 
 
This very special ammo box is in completely original condition, and retains the canvas carry strap/hinge assembly. 
 
Indeed this is the only example of this particular variant of an Anschußpatronen box which we have ever even seen - including after extensive research - yet alone had to offer; and so here's a unique piece of equipment for any collector of ordnance boxes and/or sniper small arms related items! 
 
A piece that would make the perfect accompaniment to a display of German WWII sniper rifles! 
 
*The scopes shown in the main photograph are for display purposes only and are not included with the wooden box