Al Wiering's contribution included a catalog for the Service Awards. From the logo style this is probably in the 80's. When we reached 5,10, 15, 20 and 25 years of service we were given opportunity to choose gift from this catalog. Judging from the fact I did not receive 5, 10 and 15 year gift this tradition must have started at that time. ( I was then past 15 years of service.)
See inside HERE to see what the choices were at your anniversary date.