Originally conceived as a complement or accessory to the 1 - 75 series these two side lines to the standard MATCHBOX series have developed into separate collection areas with many collectors getting into the smaller variations just as they do with the normal range. Genuine mint / boxed models are almost always in the 3-digit range since the production volumes of those series were significantly lower then what was produced on the standard 1-75 series and many boxes got damaged in transit because of the higher weight of many of those A- & M-Series models.