LEGO 161 Battery Wagon is a vintage Trains set from 1972 valued at $141 for new and sealed sets, up 2287% from an original retail price of $5.89. Annual appreciation has averaged 6.06% since release. Used copies are valued between $37 and $52 depending on condition.
LEGO 161-1 Battery Wagon is a Trains 4.5V / 12V set released in 1972, containing 8 pieces. Also known as Battery Wagon with Signal and Direction Switch, it includes a battery wagon with a red base and blue detachable roof, wires, a lid, and a signal piece for use with LEGO motorized train sets. The wagon is designed to hold three C-cell batteries under the removable roof and has a side-mounted off-center switch for changing direction. It also features an under-mounted power interrupter button for starting or stopping the train, and the body carries an "International Transport" sticker.
A new and sealed Battery Wagon is currently valued at around $141, with annual growth of approximately 4%. The average used price is $42 for those in good overall condition. Based on current trends, this set could be valued near $148 within the next year.