Spent the other day on the phone to insurance co's trying to get a bundled rate for house , condo and vehicles. Currently have that spread over 3 insurers now. What a clusterfak.
Nobody could match what I have now.
Was told by one broker that they would not insure the condo due to 60 amp screw in fuse panel. WTF!
If I update service is that just at the box? Any electricians have a ball park figure for that kind of change or is it very job specific?
The one big catch is most (all?) condos will require this work to be done by a licensed trade so you WILL be paying for labour. If it was a private residence you can legally do it yourself with an ESA notification (aka permit).
For a new panel, if the stars align (length and location of the feed works in a new panel, conduit locations, etc.) and they (insurance) is good with a 60A panel (no service upgrade just a switch to a modern breaker panel) you can (still) pick up a 60 amp main panel for ~$140+. Since you are replacing the panel ESA may
likely require CAFI (AFCI) breakers for most 120v circuits at $90 to $120 each (newer code and these drive up the costs a lot), count the number of 120V fuses and multiply... Add the split duplex GFCI breakers for kitchen... Materials, lets call it $1500+ if fancy breakers are required. Then add labour which will be the killer IMO. Fix drywall, and done.
They make CAFI outlets (much cheaper) and if they can find the first one on each circuit they can protect downstream from there but that can be tricky in an existing condo as they tended to wire ceiling lights first. No split-duplex GFCI outlets AFAIK, so breaker here. Maybe ESA says modern breakers are not required for this type of retrofit, one has to double check????
Upgrading to 100A inside a condo may be a cost nightmare...
As for the dangers of the existing fuse panel. IME corrosion will be a risk. The fuse holders corrode over the decades and create a high resistance points in the panel. This is typically the biggest concern with the stove in your case (high current). The panel can catch on fire (I have seen this multiple times). If you are lucky the high heat causes the fuse to keep tripping first (they work on heat) but this is not always the case. Now multiply this by hacks like pennies to fix this issue. Mitigating your risk, shut down the power, pull the fuses, inspect and carefully clean the fuse holders IF required. Insurance won't care you did this but if it saves a future fire claim you still win...
BTW this IS a typical OLD house (or in this case condo) problem...