Based on the earliest found VIN number to the last possible VIN number and their respective production dates.
NOTE: this data does not show exact day of the begining of manufacturing, this research was to find an earliest year of production.

Alfa 147

ZAR93700005000001
190.835.0.0 – 2.0 TS 16V SELESPEED DISTINCTIVE -3 PORTE
Vehicle: 03000173
Prod. date: 22/4/2000

ZAR93700003470450
190.A57.4.0 – 1.9 JTD 8V 120CV/88KW NEW PROGRESSION 5P
Vehicle:   03651787
Prod. date: 28/5/2010

Alfa 156

ZAR93200000000003
116.847.0.0 – BN 2.4 JTD CF2 RICCO
Vehicle: 00000003
Prod. date: 10/12/1996
(additionally confirmed by Centro Documentazione Alfa Romeo)

ZAR93200000000012
116.829.0.0 – BN 2.5 V6 24V CF2 RICCO
Vehicle: 00000023
Prod. date: 11/12/1996

ZAR93200001396866
116.026.3.0 – CROSSWAGON 4X4 1.9 JTD 16V E4150CV 110KW MEDIUM-MY.2004
Vehicle: 00673963
Prod. date: 27/2/2007

Alfa 166

ZAR93600000000003
136.452.0.0 – 2.0 V6 TB CF2
Vehicle: 5
Prod. date: 31/10/1996

ZAR93600000000011
136.155.0.0 – 2.5 V6 24V CF2 “PROGRESSION”
Vehicle: 13
Prod. date: 31/10/1996

ZAR93600000101188
136.114.1.0 – 2.4 JTD 20V 180CV 132KW E4 CM PROGRESSION
Vehicle: 99969
Prod. date: 30/6/2007

Alfa 159

ZAR93900007000110
140.464.0.0 – BN 1.9 JTD 16V 150CV 110KW E4 HIGH
Vehicle:   00000054
Prod. date: 5/8/2004
(additionally confirmed by Centro Documentazione Alfa Romeo)

ZAR93900007292065
140CBZ351870 – BN 3.2 V6 CF4 S.PLUS AISIN 4X4 GD U.K.
Vehicle:   07248564
Prod. date: 30/11/2011

Alfa GT

ZAR93700005121011
125.233.0.0 – 1.9 JTD 16V E3 150CV 110KW C.M. 6M DISTINCTIVE
Vehicle: 00000597
Prod. date: 28/11/2003

ZAR93700003470444
125.333.1.0 – 1.9 JTD 16V E4 150CV 110KW C.M. 6M PROGRESSION MY.2006
Vehicle: 00080743
Prod. date: 16/6/2010

ZAR93700003470377
125.437.1.0 – 3.2 V6 24V 240CV 176KW C.M. 6M DISTINCTIVE MY.2006
Vehicle: 00080814
Prod. date: 1/7/2010

Due to unsequential and omittive nature of VIN there is still a chance that an earlier or later number may be found, especially on high volume cars like 147/GT and 156.