Vintage 10k Gold 3 Diamonds Enamel Burns Harbor Bethlehem Steel Emblem 30 Year Service Award Pin.  Excellent condition.  This belonged to my 88 year old father who worked his entire career at Bethlehem Steel.  A Penn State graduate in engineering, he started his career in Pennsylvania right out of college, then was transferred to the Baltimore, Maryland plant, then a year later to Burns Harbor plant in Indiana where continued to work until he retired 32 years ago.  This pin is his 30 years of service pin (a diamond for each 10 years of service).  Made by O.C. Tanner Company (marked on back CTO--Company of Tanner Original--well known company that makes awards jewelry, even making the metals for the 2002 Winter Olympics in Salt Lake City, where the company is based out of)  Bethlehem Steel logo enameled on front.  Marked 10K on backside. Diamonds are a nice size and just not chips.  I like it but I can not save everything.  Hope it finds a good home that appreciates it as a piece of history.