and designated generally as 20 comprises a cover 22 having a cover top surface 24 a cover front surface 26 and projecting tabs 28 a base 30 similarly has a base bottom surface 32 a base front surface 34 and projecting tabs 36 the cover and base projecting tabs 28 and 36 respectively are complementary to each other and interlock to enable the cover 24 and the base 30 to slideably engage each other when so engaged the cover and base define an interior compartment shown particularly in fig2 and described below the interior compartment is designed to accommodate folded currency so that the currency storage device may be discretely carried in a pocket the cover 22 and the base 30 define a slot 38 in communication with the interior compartment and the exterior of the currency storage device projecting partially through the cover top surface 24 is a thumbwheel 40 for drawing and assisting paper currency into an interior compartment of the portable currency storage device the cover also defines holes 42 extending therethrough for a purpose to be described below fig2 shows an exploded view of the cover 22 and base 30 wherein the interior compartment shown generally at 44 is defined by the base top surface 46 the sidewalls 48 and the cover bottom surface 50 along the tops of the sidewalls are a plurality of retractable pins 52 that are biased to the extended position as shown said retractable pins being aligned with the holes 42 when said cover 22 and said base 30 are slideably engaged when the cover 22 and the base 30 are fully engaged so that the front surfaces 26 and 34 are flush the bias of the retractable pins 52 causes them to extend into the holes 42 thus preventing the.