Yes, it did come from Cliff, which means that it could be some European rose we've never seen before.
I love our guessing games.
Betty, I used to buy all of the new J&P roses as soon as the catalog came out, so Summer Fashion has been a staple in my garden for close to 25 years. I replaced several as the gophers killed each one over the years and the latest replacement is finally in a gopher cage. I love that rose. It is a possibility, but the blooms on my Summer Fashion are always smaller than these, I don't remember the petals ever being scalloped, the blooms are more "perfect" and never lax until they age, and the coral tinge also doesn't appear until they age, as you pointed out. The bloom in the photo isn't aging. It opened up looking like this.
Sue, I remember the conversation, but I don't remember the rose.
Toni, you may be right about the first flush being deceptive. Maybe this will turn out to be Razzle Dazzle and display more orange as it settles in. I'm wondering about yours, however. Razzle Dazzle and some of Fryer's other floribundas are known to have blooms that are larger than average. The bloom in this photo is about 4 inches in diameter.
Stay tuned for the second flush and either the solution or another round of guesses.