This one was tough to get a clear photo. The upper two letters, K and V are smaller, and less distinct than the remaining three. I call the next two letters J and L, but they could be stylized J and C, or something else altogether, as they are not Latin or Cyrillic letters in the normal sense. The lower letter is clearly a T, and the outline resembles a shield. Nation of origin is unknown at this time. The light source was a 32 white LED flashlight, held above the insulator, in order to enhance the embossing as much as possible.

Update 8/31/07: The J may be a stylized I, so perhaps the embossing is K V / I L / T

Perhaps one single word "KVILT".