This is based on my own experience with a home inspector indicating this problem durring a home inspection of an older home.
Ask your town building department, a local electrician, or your home inspector to name a few resources.
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Fuse panels with the proper size fuses are ok. In fact they may even be better than circuit breakers. Some panels both with fuses and circuit breaker have had manufactures issues.
The only issue from an insurance standpoint is if the house has knob and tube wiring.
Check with your local building dept and the electrical inspector if you have questions, they are typically very helpful.