a work of art, piece of furniture, or decorative object made at an earlier period and according to various customs laws at least 100 years ago
Thread is about golf clubs, which falls in to the 'antique' category. For golf clubs. Which is covered below.....😉
existing since or belonging to earlier times
being in the style or fashion of former times
made in or representative of the work of an earlier period
I generally do not use the word for anything less than 50 yrs. old, myself.
'Antique vehicles' in my state must be over 25 yrs old for the special plates.