Thank you for your assistance Arthur - you may probably correct.
I think I was thrown off because the spacing of dark and light on the bracelet in the 1944 photo does not batch the sapphire birthday bracelet where the baguette diamonds are about half the width of the sapphires - do doubt an effect of the sparkle of the diamonds.
In the colour photo from 1993 the baguette diamonds almost blend away whereas in the black and white photo they are more pronounced.