LtCol’s dated 1937- WWII period use most like for the colonels.
This is a two pair set of Bailey Banks & Biddle full colonel’s eagles, and lieutenant colonel’s silver oak leaves. I do not know who the officer receiving or the names of those giving. It would be a long search going through the Army Registers for the 1930’s period, but not impossible to find a name.
The LtCol’s reads on the back, “M.G.A. TO H.E.K./MAY 29, 1937.” & BB& B/ STERLING. These are pin back with locking rings, and have an untouched patina to the silver.
The Col’s reads, “R.L.C. TO H.E.K. (No date). BB& B/ STERLING. These are screw back with thumb nuts, one of which is a replacement and turns tight on to a slightly bent post. These will work well on uniform. Patina on one has been cleaned at some point, but they are a pair.
Obviously this officer was promoted in 1937, and quickly made the next grade with the beginning of WWII.
BB& B insignia is highly sought after, and especially when any ID’s or dates are encountered. Overall a fine pair.