Look wikipedia about german nobility:

German Nobility

The crown with seven jags is, as Jani said, a Freiherren Krone, but not only…. Some of the german ancient nobility families have also 7 jags and not 5 in their crown! So you have the choice between some hundreds of families and those beginning with a "R" may be numerous.

The more jags in the crown the "higher" is the nobel title (Graf, Herzog, Fürst etc.) with the Kaiser Krone on top which is "closed". (the jags)

Gunwolf

here is another example:


http://www.hunting-heritage.com