I read the Hienz 57 article, and nothing was mentioned about the big rumor of it being some kind of secret romantic code for Mr & Mrs. Hienz. I thought you might like to hear that one too. I saw it somewhere on the net, but can’t remember where. 
I’m guessing this is the article in question:
http://www.straightdope.com/classics/a1_195.html
Oh, and welcome to the SDMB!
And Thank your for your welcome. I like stuff I can comment on and this place has a lot of stuff to comment on. Have a great week.