Hults Bruk – A – Pre 1988

Can you please help me identify the following axe head and a date when produced. See attached pics. It has the HB logo, made in Sweden, and 4 1/2 on it.

The dimensions:

Toe to Poll: 20.5cm

Poll: 8.5cm

Toe to Heel: 12.4cm

I take it the 4 1/2 means 4.5 pounds. Is that for the head only? If I weigh it, its giving me 1.73kg (3.81lbs). Are the dimensions close to the original? Do you think a bit of material been sharpened off? It doesn’t seem like there has been sharpening. My scale may not be accurate.