LEGO 521 1x1 and 1x2 Plates is a vintage Classic set from 1962 valued at $50 for new and sealed sets, up 9932% from an original retail price of $0.50. Annual appreciation has averaged 6.31% since release. Used copies are valued between $27 and $33 depending on condition.
LEGO 521-9 1x1 and 1x2 Plates is a Classic Supplemental set released in 1962, containing 82 pieces. This early parts pack was issued in the architectural hobby und modelbau line and consists of small 1x1 and 1x2 plates in several colors, including black, blue, light gray, red, trans-clear, white, and yellow. The set also includes a light gray 8 x 11 plate and a trans-clear 8 x 11 x 3 container box top. It was sold with two different box sleeve variations, and the exact color assortment could vary between individual boxes.
A new and sealed 1x1 and 1x2 Plates is currently valued at around $50, with annual growth of approximately 6%. The average used price is $27 for those in good overall condition. Based on current trends, this set could be valued near $53 within the next year. New and sealed listings currently range from $45 to $62.