LEGO 5028 Duplo Primo Plate 4x4 Blue was a Service Packs exclusive set released in 1996.

Sets in Service Packs / Primo

Theme / Subtheme Service Packs / Primo
Year 1998
Pieces 4
Availability Retired
5022 LEGO Primo / Duplo Converter Bricks
Retail $3.99
Value $43.85
Growth  999.0%
Annual growth 9.7%
Theme / Subtheme Service Packs / Primo
Year 1999
Pieces 2
Availability Retired
5021 LEGO Primo Wagons
Retail $3.99
Value $10.75
Growth  169.4%
Annual growth 4.0%

Sets in Service Packs 1996

Year 1996
Pieces 80
Availability Retired
5128 LEGO Transparent Plates, Bricks, Toolholders
Retail $3.49
Value $10.25
Growth  193.7%
Annual growth 3.3%
Theme / Subtheme Service Packs / Technic
Year 1996
Pieces 64
Availability Retired
5289 LEGO Technic Toggle Joints and Connectors
Retail $4.49
Value $7.68
Growth  71.0%
Annual growth 4.1%
Year 1996
Pieces 62
Availability Retired
5140 LEGO Basic Bricks Red
Retail $4.99
Value $19.72
Growth  295.2%
Annual growth 4.7%
Year 1996
Pieces 62
Availability Retired
5141 LEGO Basic Bricks Blue
Retail $4.99
Value $22.40
Growth  348.9%
Annual growth 5.5%
Year 1996
Pieces 62
Availability Retired
5142 LEGO Basic Bricks White
Retail $4.99
Value $10.14
Growth  103.2%
Annual growth 2.6%
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