United States. A Rare Silver Manhattan Project Lapel Pin consisting of a blue enamelled Romanian Cross with clusters of nine gilt rays in eac the underneath of which is

the underneath of which is plain with three firing holes

cased Grand Cross set of insignia

with mid 20th century ribbon

Constructed of gilded and brown-painted porcelain

with suspension ring on a sky blue and white ribbon

United States. A Rare Silver Manhattan Project Lapel Pin consisting of a blue enamelled Romanian Cross with clusters of nine gilt rays in eac the underneath of which isObverse bearing the inscription MANHATTAN PROJECT A BOMB, with a castle on the bottom, reverse pin and catch with mark STERLING and WHITEHEAD & HOAG, 17. 06 mm, evidence of slight wear on obverse, extremely fine condition. Footnote: These pins were given to the workers who spent more than one year on the Manhattan Project. The Manhattan Project was the common name for what was officially known as the Manhattan Engineer District, the WWII activities