OK I am in work-avoidance mode today so I did a shallow dive.
Cairo Mezz owns mezz (euribor 3m+3%) and junior (euribor 3m+5%) notes due 2035, 2054, and 2062. These notes get paid when collections are made on part of Eurobank's old bad loan book. The notes trade on the Vienna exchange, but they are not active, so valuation is via DCF. The notes rank at the bottom of the payment waterfall for the relevant bad loans (7, 8, 9, and 10 out of 10 levels), so they have received no interest or principal repayments yet. However, in 2023 Cairo recorded a DCF valuation gain on the mezzanine notes, mainly because receipts for the senior notes came in ahead of expectations. (Cairo doesn't own the seniors but obviously improved senior receipts lifts the chance that the mezz and junior notes eventually receive something.) Another reason for the valuation increase was rising Greek real estate prices, which affects the collateral backing some or all of the defaulted loans.
Basic financials:
The mezz notes are valued at E179m using a discount rate of 17%.
The junior notes are valued at 0.
There are no material liabilities.
The book value is E179m.
The share price is E0.40, giving a market cap of E123m.
The fun bit is that the nominal value of the notes is E2.7bn, of which E1.1bn is in the mezz and E1.6bn is in the juniors. Presumably the nominal value reflects what the notes would be worth if the underlying loans were money good. I assume there are filings for the individual notes somewhere with data on collateral etc. but I can't find them.
So, for Fairfax:
FFH owns 50% of Cairo, worth E61m today.
Carrying value is probably E56m, which was the market value at the end of 2q (I am not sure because a quick word search of the FFH annual report returns no hits).
Lookthrough share of nominal value of the mezz: 50% x E1.1bn = E550m.
Lookthrough share of total nominal value: 50% x E2.7bn = E1.45bn.
Conclusion: in theory Cairo could be worth E1.45bn to FFH, but in reality E550m (full value for the mezz and nothing for the junior) would be an excellent result. No guarantees, but if the Greek economy continues to perform, and cash starts to trickle in, and underlying collateral values continue to rise, and the discount rate comes down (which it should if all the other factors fall into line), it's possible Cairo contributes a couple of hundred million dollars to FFH's book value over the next few years.
NB I have edited this to correct the error I made regarding FFH's % ownership.