Gentlemen,
Hilfskomitee translates as "Assistance Committee" making the complete wording on the car translate as "Austrian Assistance Committee for the Bulgarian Red Cross". Therefore, this was a committee set up to do just that. Assist the Bulgarian Red Cross. I am not sure why this committee would be producing these Bulgarian badges unless it were to raise fund for the Bulgarian Red Cross since the card shows a sale price. I don't doubt that this is a Bulgarian badge.
Kingdom of Bulgaria: WW1 Badge of Merit of the
Bulgarian Red Cross.
The badge, with the Crown of Tsar Ferdinand,
was awarded to Austrians, Bulgarians and
Germans, for meritorious services (or more
commonly, for offering significant amount of
money) to the Organization.
Regards,
Gordon