In 1965, LEGO released 18 Classic sets across 5 subthemes, all of these sets have been retired. Subthemes for that year included Basic Set, Building, HO 187 Vehicles, Supplemental, and Vehicle. For that year, the total price of all retail sets cost $58, today those sets are valued around $11,752.
Most valuable 1965 LEGO Classic set
698-2 1:87 12 Cars $2,232.30
Highest growth 1965 Classic set
326 Small Cottage +72509.47%
Largest 1965 LEGO Classic set
321 Clowns 223 pieces
18 sets

005 Basic Building Set in Cardboard

Theme / Subtheme Classic / Basic Set
Year 1965
Pieces 53
Availability Retired
005 LEGO Basic Building Set in Cardboard
Retail $1.25
Value $259.59
Growth  +20667.2%
Annual growth 9.1%

010 Basic Building Set in Cardboard

Theme / Subtheme Classic / Basic Set
Year 1965
Pieces 57
Availability Retired
010 LEGO Basic Building Set in Cardboard
Retail $1.25

020 Basic Building Set in Cardboard

Theme / Subtheme Classic / Basic Set
Year 1965
Pieces 94
Availability Retired
020 LEGO Basic Building Set in Cardboard
Retail $2.25
Value $160.54
Growth  +7035.1%
Annual growth 7.3%

030 Basic Building Set in Cardboard

Theme / Subtheme Classic / Basic Set
Year 1965
Pieces 167
Availability Retired
030 LEGO Basic Building Set in Cardboard
Retail $3.00

060-2 Basic Building Set in Cardboard

Theme / Subtheme Classic / Basic Set
Year 1965
Availability Retired
060-2 LEGO Basic Building Set in Cardboard
Retail $8.00
Value $1,205.67
Growth  +14970.9%
Annual growth 8.5%

319 Truck with Trailer

Theme / Subtheme Classic / Vehicle
Year 1965
Pieces 74
Availability Retired
319 LEGO Truck with Trailer
Retail $4.25
Value $474.40
Growth  +11062.4%
Annual growth 8.0%

320-2 Airplane

Theme / Subtheme Classic / Vehicle
Year 1965
Pieces 120
Availability Retired
320-2 LEGO Airplane
Retail $3.50
Value $1,202.35
Growth  +34252.9%
Annual growth 10.1%

321 Clowns

Theme / Subtheme Classic / Basic Set
Year 1965
Pieces 223
Availability Retired
321 LEGO Clowns
Retail $5.25
Value $1,591.64
Growth  +30217.0%
Annual growth 9.8%

326 Small Cottage

Theme / Subtheme Classic / Building
Year 1965
Pieces 60
Availability Retired
326 LEGO Small Cottage
Retail $0.95
Value $689.79
Growth  +72509.5%
Annual growth 11.3%

409 38 Slimbricks Assorted Sizes

Theme / Subtheme Classic / Supplemental
Year 1965
Pieces 38
Availability Retired
409 LEGO 38 Slimbricks Assorted Sizes
Retail $0.50
Value $78.97
Growth  +15694.0%
Annual growth 7.4%

509 38 Slimbricks Assorted Sizes

Theme / Subtheme Classic / Supplemental
Year 1965
Pieces 38
Availability Retired
509 LEGO 38 Slimbricks Assorted Sizes
Retail $0.50
Value $87.69
Growth  +17438.0%
Annual growth 7.6%

510-2 Tiles

Theme / Subtheme Classic / Supplemental
Year 1965
Pieces 52
Availability Retired
510-2 LEGO Tiles
Retail $0.50
Value $58.83
Growth  +11666.0%
Annual growth 6.9%

603-2 1:87 CitroEn DS 19

Theme / Subtheme Classic / HO 1:87 Vehicles
Year 1965
Pieces 1
Availability Retired
603-2 LEGO 1:87 CitroEn DS 19
Retail $0.95
Value $359.65
Growth  +37757.9%
Annual growth 10.1%

605-3 1:87 Fiat 1800

Theme / Subtheme Classic / HO 1:87 Vehicles
Year 1965
Pieces 1
Availability Retired
605-3 LEGO 1:87 Fiat 1800
Retail $0.95
Value $273.85
Growth  +28726.3%
Annual growth 9.6%

607-2 1:87 VW Samba Bus

Theme / Subtheme Classic / HO 1:87 Vehicles
Year 1965
Pieces 1
Availability Retired
607-2 LEGO 1:87 VW Samba Bus
Retail $1.50
Value $330.86
Growth  +21957.3%
Annual growth 9.3%

662-2 1:87 Opel Rekord

Theme / Subtheme Classic / HO 1:87 Vehicles
Year 1965
Pieces 1
Availability Retired
662-2 LEGO 1:87 Opel Rekord
Retail $3.00
Value $537.02
Growth  +17800.7%
Annual growth 8.9%

698-2 1:87 12 Cars

Theme / Subtheme Classic / HO 1:87 Vehicles
Year 1965
Pieces 12
Availability Retired
698-2 LEGO 1:87 12 Cars
Retail $10.00
Value $2,232.30
Growth  +22223.0%
Annual growth 9.3%

699-2 1:87 8 Trucks

Theme / Subtheme Classic / HO 1:87 Vehicles
Year 1965
Pieces 8
Availability Retired
699-2 LEGO 1:87 8 Trucks
Retail $10.00
Value $2,208.78
Growth  +21987.8%
Annual growth 9.3%