Mens 1970s vintage 3 piece suit. Blue plaid wool, flat front trouser with slight flare leg, vest waistcoat, and jacket with single vent.

Back of vest shows some spots in two areas and there is one faint spot on jacket and one faint spot on pants. See photos

No size tags, approximate 38R or short, refer to measurements

FLAT LAY
Jacket
16.5" shoulder
20" chest
18.5" waist
30" long center back from collar seam
23" / 9" sleeve
Vest
19" chest
21" long center back
Pant
16.5" waist
11.4" rise
28" inseam (with 2.5" single fold hem on inside if you need longer)
38" long