Yellow, round snap button (Alfa button, #54) with S-spring socket is used for making small leather projects like bags, clutches, purses. Made in Japan of Hasi-Hato company. Cap diameter - 12.5 mm.
Durable Dot Snaps 12.5mm (baby dots) –
3/4 Golden Yellow Pearl Shell 2-hole Button, 4 for $7.10 #340703-D – The Button Bird
Coated Hasp, Steel,Black/Yellow, 1 in.,6-Hole, No Tabs - ZING Green Safety Products
Line 24 Solid Brass Snaps HASI-HATO- 5/16 Inch Long Posts (Set Of 20)
Snap Buttons - Snap Fasteners & Press Studs - Grainger Industrial Supply
Leather Snaps
Meanhoo Snap Fasteners Kit, 120 Pcs Stainless Steel Marine Screws Snaps Button Setting M
Pro Spring Snap Setter (M)Tempered/ metal fittings: No.5(HASI HATO)/ 12.5mm(PRIM), Item list
Snap Fasteners Kit, 120 Pcs Stainless Steel Marine Screws Snaps Button Setting Machine, Heavy Duty Replacement Snap Buttons, Snap Fastener Setter Tool Repair Kit for Leather, Boat Canvas Cover, Cloth