The order form, dated July 29th 1938, was for 750 pieces of cutlery. This document should give you an idea of the rarity of each piece of flatware/silverware. You will find serving utensils, cigar boxes, cigarette boxes and lighters on the form. Notice there were no napkin rings included in the order. As a matter of fact, I have never seen any evidence of napkin rings existence on any period picture or order/inventory forms. I included a photo copy of the original order form in addition to my translation of the items in English.
Order form from www.hitlersnest.co.uk