While Typography uses standardised letterforms, lettering is different. Lettering is an older art and consists of unique forms made with a variety of tools. Today the applications and potential of lettering and type are very broad, when designers create handmade letterforms and experimental Alphabets.
for more pictures and further reading on how this was done, read here:
Why Knowledge of Lettering as Art & Craft is Essential to Graphic Design Education
“Lettering is an Art & Craft. It requires skill in draughtsmanship, penmanship and inkmanship. It requires a sure knowledge of forms and style supported by solid technical experience in art and printing. This is what we spend our life in getting. This is what is sieved through into each piece of work.”