Modern Design 31 March 2011 Modern Design 296 296 Russian 12 bolt diving helmet 12 bolt diving helmet 1953bronze, glass 18¾ h × 16 w × 15 d in (48 × 41 × 38 cm) estimate: $3,000–5,000 result: $10,625 own a similar item? free evaluation Signed and dated on inscribed plaque to front. print
