guilloche frame. spirographic round grungy pattern. for certificates, watermarks, vouchers.

guilloche frame spirographic round grungy pattern design element certificates watermarks vouchers vector illustration line set symbol decorative abstract ornament curve white collection circular geometric shape geometry ornate border graphic rosette wallpaper safety swirl tile trademark valuta repetition wave oscillation black texture creative ring circle spiral art petal spirograph mathematics isolated seal voucher official money cheque note logo