LEGO 371 Sea Plane is a vintage LEGOLAND set from 1977 valued at $312 for new and sealed sets, up 8849% from an original retail price of $3.49. Annual appreciation has averaged 9.61% since release. On the used market, values range from $11 to $17 based on condition.
LEGO 371-3 Sea Plane is a LEGOLAND Town set released in 1977, containing 47 pieces and 2 minifigures. The set builds a small floatplane with twin pontoons for water landings. It corresponds to the version marketed in the United States as set 712 Sea Plane, while 371-3 was distributed in Europe, the UK, and Australia. The set name is also documented as “Seaplane.” Based on current trends, this set could be valued near $340 within the next year.
Sea Plane (371-3) is a very old and rare LEGO set. It has not been available online or in retail stores in good/new condition for over 2 years. Because of its scarcity, the current estimated value of in new condition of $312.31 may be much lower than its true market value. Released in 1977, sealed sets in good condition are especially difficult to find, often commanding a premium well above estimates.
There are currently no new/sealed listings available for 371-3 Sea Plane at this time.