i've trimmed out the lining (i love looking at the innards of a well-tailored garment!), preserving the inner pocket and of course the harris tweed label. wondering about the number stamped on, i did a little googling and found this interesting note on the vintage fashion guild website:
The Harris Tweed Authority is a great aid in dating Harris Tweed labels. You can contact them with the number that is stamped on the label and from that they can supply you with the maker and approximate date of the cloth.
well! you can rest assured that i contacted the harris tweed authority right away. i hope they have some information for me! based on the pictures from the vfg post, i would guess that my coat is from the 1960s.