M Models

2000 - 0 11 156821L

2001 - 1 11 031421

Year - 1977
Reference - 7 = last digit of year
11 = brochure
03 = series
0520 = Catalogue number
2/77 = second half of year to early part of next year
Shown as: 1977 - 7 11 030520 2/77