That looks nice.
I had a project once duplicating an odd font cast in a part. I took a picture of the part and imported it into AutoCAD as the background of a drawing. Then I more or less traced the letters but drew them new from scratch with straight lines of uniform length, spacing, angles, and arcs. Many letters have similarities with others, R is like a B, E similar to an F and so on. Build your replacement letters to have the same features as each other where applicable.
I’m suggesting starting from the finest detail of the original numbers. If you haven’t found the exact font to reuse, and you want it perfect, then that’s about your only or best option.
With accurately drawn letters in a drafting program you can scale them perfectly as needed.
