My first cycling kit in the 1970s was a plain green merino wool jersey and black merino wool shorts with chamois pad. My current favorite kit for summer rides is pretty much the same, just updated to more practical and lighter weight synthetic material - a Garneau Lemmon II jersey and inexpensive Przewalski shorts. My thighs are a bit long out of proportion to my legs so most shorts and bibs fit me shorty-shorts style, kinda like the Anquetil and Merckx era shorts.
Pretty close to what I wore in 1978, just newer fabrics. Better helmets. Clipless instead of Detto Pietros. Grayer hair. Slower.