LEGO 403 Train Couplers and Wheels is a vintage Classic set from 1967 valued at $26 for new and sealed sets, up 5100% from an original retail price of $0.50. Annual appreciation has averaged 5.68% since release. On the used market, values range from $21 to $31 based on condition.
LEGO 403-2 Train Couplers and Wheels is a Classic Supplemental set released in 1967, containing 12 pieces. It was sold under the LEGO The Building Toy branding and is a parts pack for expanding or repairing 1960s LEGO train models. The set includes three pairs of train couplers, four red train wheels with traction teeth, and two white 2x4 modified bearing bricks with wheel holders. It is similar to set 403-3 Train Couplers and Wheels (System), with parts centered on red modified plates with train couplers and rolling stock wheel components.
A new and sealed Train Couplers and Wheels is currently valued at around $26, with annual growth of approximately 4%, which is lower than other Supplemental sets. The average used price is $22 for those in good overall condition. Based on current trends, this set could be valued near $27 within the next year.