The phrase "special hallmarks" is correct and can be used in written English.
It is used to describe unique traits or characteristics that distinguish something from other things. For example, one might say: "This school's special hallmarks include its focus on sustainability and experiential learning."
In recent years, the inexorable nature of Iraq's horrors have been demonstrated by new campaigns bearing the special hallmark of Mr. Hussein.
So the violation of any such property will also be a special hallmark of a non-random sequence, an indicator that the sequence which possesses it is an unusual one.
The virus bears special encryption hallmarks that an Iranian cyberdefense official said have strong similarities to previous Israeli malware.
Third, despite the special avascular hallmark of intervertebral discs, cells in the center of the disc exist at low concentrations of oxygen.
Ironic, huh?" Final Judgment: Epically icky; weds a visionary depiction of the afterlife (it earned an Academy Award for special effects) to Hallmark card homilies.
On top of that, the Giants' special teams — often a hallmark of disciplined play — were horrible.
While some authors (Confavreux et al., 2000, 2003; Confavreux, 2006 a, b; Debouverie et al., 2008) used a score of 4 as early benchmark of disability accumulation, we chose to use the score of 3. Indeed, during the data collection we paid a special attention to this hallmark, as did others (Weinshenker et al., 1989; Cottrell et al., 1999; Kremenchutzky et al., 2006; Tremlett et al., 2006).
His assessment is that the uniforms and the uniformity of weapons suggest that "the well-organised 'militants' have all the hallmarks of Russian special forces, or to be more exact, the military intelligence special forces or 'Spetsnaz'Spetsnaz
MLL1 -fusion proteins resulting from chromosomal translocations are molecular hallmarks of a special type of leukemia, which occurs in over 70% infant leukemia patients and often accompanies poor prognosis.
Mr. Rumsfeld has repeatedly stated that he wants the entire military, and especially the Army, to be speedier and deadlier, the hallmark of the Special Operations forces.
