In 1990, LEGO released 3 Castle Black Knights sets, all of these sets have been retired. For that year, the total price of all retail sets cost $34, today those sets are valued around $1,080, a growth of 3201%.
Most valuable 1990 LEGO Castle Black Knights set
6059 Knight's Stronghold $674.66
Highest growth 1990 Castle Black Knights set
6034 Black Monarch's Ghost +3370.76%
Theme / Subtheme Castle / Black Knights
Year 1990
Pieces / Minifigs 56 / 2
Availability Retired
6018 LEGO Black Knights Battle Dragon
Retail $4.49
Value $153.31
Growth  3314.5%
Annual growth 10.2%
Theme / Subtheme Castle / Black Knights
Year 1990
Pieces / Minifigs 46 / 2
Availability Retired
6034 LEGO Black Knights Black Monarch's Ghost
Retail $7.25
Value $251.63
Growth  3370.8%
Annual growth 9.6%
Theme / Subtheme Castle / Black Knights
Year 1990
Pieces / Minifigs 224 / 5
Availability Retired
6059 LEGO Black Knights Knight's Stronghold
Retail $21.99
Value $674.66
Growth  2968.0%
Annual growth 6.0%