Ok. This snake appears to be in good condition, it is not thin but is nice and lean and muscular. Judging by the pattern and coloration, it also appears to be a normal Colombian boa.

Based on the pictures alone, the snake's good condition and appearance, and the length you gave in your first post, I would estimate this snake to be about 2 years old, plus or minus a little. It looks to be about the same size as my hypo female which is an early 2011 (roughly 2 yrs old).

Do you have a gram weight? That might help confirm my thoughts....