LEGO 4537 Octan Twin Tank Rail Tanker is a vintage Trains set from 1993 valued at $250 for new and sealed sets, up 987% from an original retail price of $22.99. Annual appreciation has averaged 4.85% since release. Used copies are valued between $58 and $76 depending on condition. Secondary market prices for new and sealed sets typically fall between $212 and $275.
LEGO 4537 Octan Twin Tank Rail Tanker is a Trains 9V set released in 1993, containing 174 pieces and 1 minifigure. It builds a twin-tank rail tanker wagon for the 9V train system, a small Octan truck, and a pallet with six barrels. The wagon, barrels, and minifigure carry Octan logos, and the tanker is configured as a gasoline or diesel fuel carrier. The set is also known as Twin Tank Transport and Octan Rail Tanker.
A new and sealed Octan Twin Tank Rail Tanker is currently valued at around $250, with annual growth of approximately 5%. The average used price is $63 for those in good overall condition. Based on current trends, this set could be valued near $262 within the next year. New and sealed listings currently range from $248 to $302.