According to Yle they only started using Tiresias in 2012. The article doesn't mention which font they were using before. I would be interested in their 90s font as well.
Source: https://yle.fi/aihe/artikkeli/2012/01/27/televisiokanavien-t...
Source: https://yle.fi/aihe/artikkeli/2012/01/27/televisiokanavien-t...
https://youtu.be/enNnlLcSl9I?t=90
Edit: Comparing 90s font to Tiresias, I would too like to have that exact font they used in 90s. E.g. big "J" is terrible in Tiresias compared to that.
Ps. Never thought I'd discuss Yle subtitles at Hacker News. Thank you for your comment! :)