Wow! I have never seen a panel like that. Must be a Canadian thing.
Props to
@wtfuzz - I suspect he is correct in the Federal Pioneer guess. Those breakers very much look like Federal Pacific ones, but yeah, no red on the handles and the panel looks nothing like others I have seen.
It looks like a lot of sticker data from the front of it might be missing? I would love to see the inside of it (with detailed pictures of any stickers and all the wiring) if that was possible to do safely.
I am not an expert in breaker safety testing, but if you believe a lot of what is written up on the Internet, the Federal Pacific story is pretty damning. It seems generally accepted that the Federal Pacific Stab-Lok stuff is a latent fire hazard. In most cases I hear home inspectors will flag them and recommend replacement prior to sale. It is really a tragedy that US regulatory bodies have not taken up this issue and either published strong documentation on the risks of these panels, OR cleared their names so folks can make wise decisions about replacing them or not.
Federal Pioneer is obviously a separate company in Canada, but with the same base breaker designs. Again, if you read what you find on the Internet, their stuff may not fare any better than the US made stuff.
Should Federal Pioneer FP Stab-Lok® Panels & Circuit Breakers be Replaced?
If it were my house, I think without a doubt I would replace it. Not only is there that question of the safety, but there is also the limit to 125 amps and you have a stated desire to go higher. So yeah, I would encourage you to pursue options.
Good luck and please report back on what you end up doing!
P.S. Asking local resources about their safety (electricians, home inspectors, code inspectors, etc...) might be a good idea. I am positive you are not the only one around with those panels.