5022 Primo / Duplo Converter Bricks was a 4 piece Service Packs exclusive set released in 1998.

Sets in Service Packs / Primo

Theme / Subtheme Service Packs / Primo
Year 1999
Pieces 2
Availability Retired
5021 LEGO Primo Wagons
Retail $3.99
Value $10.20
Growth 155.6%
Annual growth 4.4%
Theme / Subtheme Service Packs / Primo
Year 1996
Pieces 1
Availability Retired
5028 LEGO Duplo Primo Plate 4x4 Blue
Retail $4.99