My memory's not what it was, but I don't remember anything about ticking a box. As I recall, it was a case of the jacket being advertised in the Golden Book as being made of an 'aniline dyed hide' (neither horse nor steer mentioned). Aniline dyed horse was hard to come by, if they had horse in stock you got that, but if they didn't, the 'hide of default' was steer. The hoo-hah ensued when some discovered that their jacket which they thought was horsehide may in fact have been steer. Then you got 'what's the difference, you can't tell them apart anyway except by DNA testing', 'yes you can, I can tell with a magnifying glass' said Ken Calder, 'no you can't', much mayhem ensued. Plus ELC said that steer was 'an authentic hide', although at the time the evidence we have now was not publicly known, so much argument as to whether the USAF used steer as well. Happy days.