Marklin produced special imprints cars and locos since the 1970’s in limited editions. This section will document many of these items categorized by car type and chronological order. Chronology and details concerning each are based on the two “Koll’s Spezial Katalog’s” from 1996 and 1997 as well as the well known archive of Gilles Monk. The Koll’s catalogs listed each item by car type in sections starting with the earliest and ending with those produced up to and including 1997, with few exceptions it is a nearly complete record for “mini-club’s” first 25 years. All ‘Z’ items listed in the Koll’s catalogs are numbered by a unique number assigned by the authors of the Koll’s catalogs: first two digits correspond to the release date followed by a sequence of numbers corresponding to chronology of release in a given year. Gilles Monk without question is the world leader in collecting Marklin Z, he is officially recognized with this title by the Guinness Book of World Records, it is quite a feat that one person has been able to collect all releases of special imprints. For the public record Mr. Monk has generously made available his list of special imprints in chronological order which correspond to his unique numbering system. There are some discrepancies with chronology between Koll and Monk for releases within a given year, but each is in agreement for release years; photographs depict the order presented in the Koll’s catalogs. The photographs that I provide depict my collection which is not complete, as my research continues I will upgrade details about other cars not currently in the collection. Very few photos exist of SMI’s, they were never documented in catalogs by Marklin. The internet provides scant photo review of these wonderful cars. And if you have the Koll’s catalogs they only presented good black and white photos of most not all cars. For the first time I hope to help other collectors of SMI’s see these graphic and wonderful cars in full color. As a point of reference I have made every attempt at providing accurate information, some details may change over time based on my continued research.