Visit What to see Collections Striped Camp Cap Accession Number: NEKHC:2009.57 Object: Cap Category: The Nazi Camp System Physical Description: Blue and white striped cap. 'N41 RB 61' printed on interior of cap (at top). Image Use: Use of images owned by the National Holocaust Centre and Museum is governed by our Terms and Conditions. Information on Item: This cap is from an unknown Nazi camp and has 'N41 RB 61' printed in the interior. These blue and grey caps formed part of the uniform issued in the Nazi camp system.