The LEGO Service Packs theme refers to supplementary sets that were released primarily from the late 1970s to the late 1990s. These packs provided additional parts, accessories, or specific components to complement existing LEGO sets. Rather than complete standalone models, Service Packs were intended to enhance or expand upon primary LEGO sets, allowing users to replace missing pieces, add more features to their builds, or customize their creations further.
Monorail was introduced in 1989 and currently consists of 3 sets. As of today,
5040 Monorail Motor 9 V is the most valuable Monorail set with an estimated new/factory sealed value of $214.
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