Vintage Brooch Daisy in Silver-Gold Tones 1960's-1970's Sarah Coventry style

Vintage 1960's-1970's large Daisy Brooch with double petals in silver/gold tones. Apprx 4" long x 2.5" wide. Retro statement piece! Unknown maker but there appears to be an "L" mark on back, possibly another mark next to it such as a heart or a crown (see last pic.) Looks very much like Sarah Coventry. Good used condition, this Brooch is a beauty!