C-6620 
Both pieces are marked .925  and are sterling silver 
Silver marked "TEKA" was made by the famous German jewelry designer and workshop Theodor Klotz , which produced mid-century modernist and floral silver pieces Circa 1950's 

The James Avery Eagle Tie tack is a MC .925 retired piece 
The JA hallmark paired with a candelabra ,(a small stamped candlestick/candelabra pictorial logo), is the iconic maker's mark for James Avery Craftsman Inc , a well-known American jewelry and silversmith company founded in Texas in 1954