503-2 Pre-School Large Set was a 16 piece Classic set released in 1968. This set was only released in Europe, UK and Australia.

Sets in Classic / Jumbo Bricks

Theme / Subtheme Classic / Jumbo Bricks
Year 1968
Pieces 8
Availability Retired
502-2 LEGO Jumbo Bricks Pre-School Medium Set
Retail $1.50
Theme / Subtheme Classic / Jumbo Bricks
Year 1966
Availability Retired
501-3 LEGO Jumbo Bricks JUMBO Pull Toy
Retail $3.50