The arrow is cleverly "hidden" and only seen when you "hover" over the picture reel to the left of the large picture, bottom. When using the app, you can simply slide the "reel" of pictures beneath the main one to see all photos.
Vintage Tie Clip Clasp Cavalry Horse And Soldier Civil War
Calligraphy Letter "M" Made USA Hickok Men's Vintage Tie Clip Clasp Bar Initial
Vintage Tie Clip Clasp Bar w/ Hanging Chain & Initials "CWF" Gold-Tone Metal
Vintage Tie Clip/Clasp, Gold Tone Metal, Etched/Imprinted Square Design