Postcard of Nico the gorilla at Longleat Safari Park

is it an ordinary 6 x 4 inch size card or a bigger version?

It is slightly bigger at 6 3/4 x 4 3/4 inches (about 17 x 12 cms).

Thankyou. It is a good photo of this very 'silvery' old man.

I sort of wish Howletts would loan them a female or two just in the remote possibly he would be both interested in them, AND fertile. They could always be returned later. But it won't happen.