• 22 mm

Stamped, back, above pin, : {\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fcharset0 Segoe UI;}} \viewkind4\uc1\pard\f0\fs18 BLOOD DONOR \par }

Stamped, back, below pin, : {\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fcharset0 Segoe UI;}} \viewkind4\uc1\pard\f0\fs18 RD855608/HWM and 3 other unreadable marks\par }