Condolences on the loss of your friend. What a lovely looking instrument. Is it safe to assume that, absent any comment on the instrument's key, it is a C/G box? What are the novelty sounds? I've seen birds and baby cries before, but who knows what things might be possible.
Yes, it's a C/G anglo and the funny sounds are squawks and whistles. I suppose they could be retuned to something more useful. Makes you wonder how they were used originally.