GENUINE 1940s BONKLIP STAINLESS STEEL BRACELET. HAS 16MM LUG FITTING. FULLY MARKED B.H.B &S (B.H.BRITTON & SONS) MADE IN ENGLAND.PAT No 349657. FIRTHS STAINLESS.ONE LINK MARKED WITH LETTER "T". FULLY EXTENDED LENGTH 8.5 INCHES.