Bulgaria's first appearance in a World Cup was the 1962 World Cup in Chile, but failed to progress to the knockout stages. The same happened in England in 1966, Mexico in 1970, and West Germany in 1974.
Coach under Hristo Mladenov, in West Germany World Cup 74 tournament, they be drawn in an extremely tough group 3 with Holland, Sweden and Uruguay. On these group team Bulgaria not show the impact as other European team with draw two games and lost 4-1 to Holland.
Here the best sources on Bulgaria crest during the World Cup 74 tournament, vector worked done by Joaqum Gaspar.