double-ended offset screwdriver (also called a cranked screwdriver).

Brand: CHROM-VANADIUM (chrome vanadium steel)

One end: Flat (slotted) screwdriver tip.

Other end: Phillips (cross-head) screwdriver tip.

Purpose: Designed for tightening or loosening screws in confined spaces where a regular screwdriver won't fit. The offset shape provides leverage and access around obstructions.

It is a practical hand tool rather than an antique. Similar vintage examples were commonly made from the 1960s through the 1990s.