TEV protease from Genescript, R&D Sytems and McLab have an N terminal His tag and may react with anti His antibodies. The lowest price I could find in a cursory search was $125 for 200ug, but someone down the hall may have it for free. Be aware that His6 is weakly antigenic and a few of the antibodies need the classic Qiagen RGS(H)6 motif to be recognized.