Neat, smaller-sized, period-publication entitled: 'Dienst-Appell-Buch' showing some interesting illustrations

This is a neat, smaller-sized period-publication, entitled: 'Dienst-Appell-Buch' that is showing some interesting (black- and white) plates (ie. illustrations) covering the insiginia of RAD, SA and SS and that comes in an overall nice and fully complete, condition. The neat smaller-sized (ie. 13,5 x 11 cms. sized) period-publication - which has 52 (partly half-sized) pages - was intended as a handy notebook to be used by NCOs and/or officers during service. It provides 'columns' (in a table-format) as intended for taking notes on names, first-names and/or places of residence. I am pretty convinced that this is a scarcely encountered booklet: I have never before seen another example. Simply a nice - and fairly early-period publication!