From Myrons Mopeds:
VIN model codes
Motor vehicles worldwide since 1981 (and USA-made since 1954) have a 17-digit Vehicle Identification Number.
VIN digits 1, 2, 3 are the world manufacturer identifier.
Tomos VIN digits 1, 2, 3 are VY2 (Yugoslavia 2) up to 1992, ZZ1 (Slovenia 1) from 1992 on
VIN digits 4, 5, 6, 7, 8 are the vehicle attributes.
Tomos VIN digit 4 is “A” up to 2013, “M” after 2013.
Tomos VIN digits 5, 6 are the 2-digit model code. See table below.
Tomos VIN digits 7, 8 is “11” up to 1992, “12” in 1992-2013, “BE” after 2013.
VIN digit 9 is a security or error check digit
VIN digit 10 is the year A=1980, B=1981, C=1982, D=1983, E=1984, F=1985, G=1986, H=1987, J=1988, K=1989
VIN digit 10 is the year L=1990, M=1991, N=1992, P=1993, R=1994, S=1995, T=1996, V=1997, W=1998, X=1999
VIN digit 10 is the year Y=2000, 1=2001, 2=2002, 3=2003, 4=2004, 5=2005, 6=2006, 7=2007, 8=2008, 9=2009
VIN digit 10 is the year A=2010, B=2011, C=2012, D=2013, E=2014, F=2015, G=2016, H=2017, J=2018, K=2019
VIN digit 10 is the year L=2020, M=2021, N=2022, P=2023, R=2024, S=2025, T=2026, V=2027, W=2028, X=2029
VIN digit 11 is the plant code.
Tomos VIN digit 11 is “K” (Koper) up to 2013, and “S” after 2013.
VIN digits 12, 13, 14, 15, 16, 17 are the 6-digit serial number.
It goes in to further detail here