Was the florin accepted across Europe as if it was some kind of proto-Euro?
Thank you for your insight.
TLDR: 1 florin = the average wages for 10 days
You can probably eat for a fortnight or so (maybe a month in the countryside), depending on how frugal you are. But the first thing you'll want to do is get the damn thing changed, because it's useless if you want to spend it on life's necessities: imagine buying a meal or shopping for a few days' groceries (no fridges) with a coin exceeding the vendor's weekly income (though you'll be very popular if you don't want change). It shouldn't be too hard to change with a local moneychanger, though you'll lose a few pennies on the trade: while it's not the tender of the realm it can be recycled into bulk or high-value trade or offered up at the mint, or melted down if gold is in high demand. You'd probably have been better off with a few dozen pennies or their equivalent in smaller denominations, if you could find enough of them (though they're just starting to become a little more widely available).