Eddy Merckx frames date range
 

this is an improved version from cadre.org - a bit more precise :)

no letter - 80
E - 81/84
Z - 84/86
A - 86/88
B - 88/90
C - 90/91
D - 92/93
F - 94/95
G - 96/98
H - 98/00
J - 00/02
K - 02/04
L - 04/06

... and it was the end of the steel frames ... there were the next series - for sure P.

Thank you for sharing your knowledge:thumb: