Versions of Montana Code 40-1-203. Proof of age on LawServer 2023 Montana Code 40-1-203. Proof of age 2022 Montana Code 40-1-203. Proof of age 2021 Montana Code 40-1-203. Proof of age 2019 Montana Code 40-1-203. Proof of age 2018 Montana Code 40-1-203. Proof of age and medical certificate — waiver of medical certificate requirement 2016 Montana Code 40-1-203. Proof of age and medical certificate — waiver of medical certificate requirement 2014 Montana Code 40-1-203. Proof of age and medical certificate — waiver of medical certificate requirement 2013 Montana Code 40-1-203. Proof of age and medical certificate — waiver of medical certificate requirement 2009 Montana Code 40-1-203 – Proof of age and medical certificate — waiver of medical certificate requirement