LEGO 1346 Touch Sensors, 4.5V is a vintage Service Packs set from 1987 valued at $32 for new and sealed sets, up 438% from an original retail price of $5.99. Annual appreciation has averaged 3.91% since release. Used copies are valued between $26 and $30 depending on condition.
LEGO 1346-1 Touch Sensors, 4.5V is a Service Packs/Technic set released in 1987, containing 2 pieces. The pack includes two black 4.5V electric touch sensor 3 x 2 bricks. It was issued as a replacement or expansion parts pack for Technic models that used the 4.5V electrical system.
A new and sealed Touch Sensors, 4.5V is currently valued at around $32, with annual growth of approximately 4%, which is higher than other Technic sets. The average used price is $27 for those in good overall condition. Based on current trends, this set could be valued near $33 within the next year.