Given the Miche cassette, which allowed bespoke combinations like this 14-26 with two 2t gaps and a 3t gap, I'm going to assume the previous owner put a fair bit of thought into ratios and that the 49t was no accident.
The only bummer about it would've been that since big rings need to be made with a specific size of smaller ring in mind and that 49/39 isn't really a thing, front shifting probably wouldn't be great.