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35 × 45 mm · 413 × 531 px · head 32–36 mm · plain white or light grey

3.5 × 4.5 cm (35 × 45 mm) · 630 × 810 px · head 36–38.25 mm · plain white

35 × 45 mm · 700 × 900 px · head 29–34 mm · plain cream or light grey

2 × 2 in (51 × 51 mm) · 1200 × 1200 px · head 25–35 mm · white or off-white