I've had these awhile, they are second world war German Wehrmacht officer riding boots.
Black Real Leather, smooth leather soles, non-slip heel
20" Tall, smooth, no buckles or zipper, top is straight not Spanish style or cut at all
Single seam up back side of boot, and stitching visible on each side from boot pulls
Would these pass approval? In reading the costume requirements on the 501st page, it seems these would even meet Tier 3, but I could be wrong and wanted to check