This is a typical tail suit from just before the period that is the primary focus of my website - but since men are notoriously slow to cast aside unfashionable garments that still fit, this is, with the exception of the shirt collar and tie (which seems to be an area where men did keep up with the times) what you might see on an older, more conservative man until the early '60s.
The sack suit in these images dates from around 1880. While most sack suits of the time tended to be in sober colors like black and dark gray, a general exception seemed to apply for plaid and plaid sack suits. While not a dominant style, they were not uncommon and allowed a rare opportunity for exuberance in a period of otherwise restrained male fashions.
A mid 19th Century brown beaver top hat.
A white cotton man's dress shirt.
A black wool man's day vest from the late 19th or early 20th Century.
An early 20th century or late 19th Century black wool morning coat.
A black wool early 20th Century wool frock coat.