Recovery binary from lost+found

Greetings,

How can I recovery binary files from lost+found?

I have:
island$ doas ls -l /usr/lost+found
total 7904
-r--r--r-- 1 root bin 3680832 Dec 31 00:30 #1866245
-r--r--r-- 1 root bin 317600 Dec 31 00:30 #2021828
island$

--
wbr, Kirill