For mrslapher, why don't you ask this "old man" if he would like to see your wife naked? He will, of course, say "Yes!"
I have found that in many situations, it is best to be forthright about what you want. I have been in situations where another man would offer to let me look at his wife, and I have done the same.
Something we are learning from sites like this is that there are many, many husbands, possibly even most husbands, who would like to show their wives naked to other men, if the situation was right. Things like posing for art-work or photography, visits to nude beaches, etc. are excellent opportunities for us to show our wives' naked bodies to other men.
The biggest problem I see is that too many husbands are embarrassed to admit this, even to themselves, and most often to their wives. But with other men we should be able to be most open and say directly "I'd like to show you my wife NAKED!" What "other" man would not accept the chance to look at another man's wife's naked body? Very, very few!