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35 × 45 mm · 420 × 540 px · head 31–36 mm · plain white or light-coloured

33 × 48 mm · 390 × 567 px · head 28–33 mm · white or close to white

2 × 2 in (51 × 51 mm) · 600 × 600 px · head 25–35 mm · plain and light-coloured

2 × 2 in (51 × 51 mm) · 600 × 600 px · head 25–35 mm · plain white or light-coloured

35 × 45 mm · 413 × 531 px · head 32–36 mm · plain and light-coloured

35 × 45 mm · 413 × 531 px · head 31.5–36 mm · plain and light-coloured

2 × 2 in (51 × 51 mm) · 600 × 600 px · head 25.4–35 mm · white or off-white

2 × 2 in (51 × 51 mm) · 600 × 600 px · head 25.4–35 mm · white or off-white