Agreed. Helvetica Bold.
Probably even genuine Linotype (Adobe) Helvetica Bold - the 'X' is correct. Clones usually tweak rarely-used characters like 'X', 'J' and 'Q' to get around the artwork copyright rules.
I should quickly add: watch out for the kerning between the 'D' and 'T'. "Kerning" is a negative space between the letters to make them graphically balanced. You'll notice that the top left of the 'T' intrudes slightly into the space for the 'D'. Must be from a high-quality lettering system.
