LEGO 1231 Windows and Doors Retailer Pack is a vintage System i Leg set from 1957 valued at $18 for new and sealed sets, up 121% from an original retail price of $8.00. Annual appreciation has averaged 4.54% since release. On the used market, values range from $14 to $16 based on condition.
LEGO 1231-4 Windows and Doors Retailer Pack is a System Supplemental set released in 1957. Designed as a retail parts assortment rather than a consumer playset, it contains a variety of red window and door elements packaged in a compartmentalized display box. Each section of the box is labeled with individual part numbers and prices in Danish øre, indicating the set’s purpose for point-of-sale display and bulk distribution to LEGO retailers.
The inner lid features printed diagrams of different window and door types, including 1×2, 1×3, and 1×4 window frames, shutters, and door elements. This set did not have a fixed part count or include any minifigures, as its contents varied depending on retail needs. The Windows and Doors Retailer Pack represents one of LEGO’s early store display assortments from the 1950s, created to support the sale of individual building elements during the formative years of the LEGO System.
A new and sealed Windows and Doors Retailer Pack is currently valued at around $18, with annual growth of approximately 5%. The average used price is $15 for those in good overall condition. New and sealed listings currently range from $20 to $28. Based on current trends, this set could be valued near $19 within the next year.