Size box: 12x6cm./4.7×2.3inch.
Size medal: 3.5cm./1.3inch.
Weight: 70gr./2.4oz.
 
This is the gold medal for 30 years of service as a volunteer to the civil defense of the DDR. The medal says:”Medal of service, civil defense”. They started with this medal in 1977 until 1985. After 1985 the medal was slightly different. This medal is from 1977-1985.
There were 3 types of medals:
Bronze: 10 years of service
Silver: 20 years of service
Gold: 30 years of service