I bought 6S1615 on June 30, 1976 (and still own it now, 49 years later). I was told that it was a Hertz car, but it had silver stripes and no "H" in the side stripes. Was it for SURE?? As a 19 year old guy that was HOT for a Shelby, I just had to take the chance. Back in those early days, we only had urban myths and rudimentary beliefs about what MADE a Shelby a real Hertz car - remember the "pop rivets in the drip rails" theory (see The Definitive Shelby Mustang Guide - pg 104) as one of those beliefs? Remember, this was before SAAC discovered / acquired the original invoices and paperwork in Shelby's attic that gave us the documentation we all take for granted these days.
I had noticed that 1615's top stripes and side stripe letters/numbers were all much thicker than just the middle piece of side stripe to the right of the "0" of G.T. 350. I learned later that was because that middle piece of side stripe after the "0" was just one coat of silver paint applied after the "H" had been removed!
Here it is in the summer of 1976:

Here it is in 1978, now with 10-spokes:

And here it is in 1983 at Shelby Parts and Restoration. Jim Cowles took these photos of me pouring on the first of the paint stripper and scraping away the silver paint to reveal the original HERTZ GOLD paint! What an exciting rush that moment of validation was for me:
Later in the side stripe stripping process I confirmed that it was just one coat of silver paint applied to mimic a piece of middle stripe where the "H" had been removed.
BTW - I recently brought all of 1615's original windshield and rear window trim out of the attic to do a micro cleaning job on them. I was astonished to discover areas of HERTZ GOLD stripe overspray on them that I had not noticed prior! Yes, I left it on there!! That is HISTORY from 1966.
The stories that many of us have of our Hertz car's missing their "H's" way back in the day to attempt to disguise the fact that they were rental cars sure makes for compelling reading in this day and age!
Kieth
I had noticed that 1615's top stripes and side stripe letters/numbers were all much thicker than just the middle piece of side stripe to the right of the "0" of G.T. 350. I learned later that was because that middle piece of side stripe after the "0" was just one coat of silver paint applied after the "H" had been removed!
Here it is in the summer of 1976:

Here it is in 1978, now with 10-spokes:

And here it is in 1983 at Shelby Parts and Restoration. Jim Cowles took these photos of me pouring on the first of the paint stripper and scraping away the silver paint to reveal the original HERTZ GOLD paint! What an exciting rush that moment of validation was for me:

Later in the side stripe stripping process I confirmed that it was just one coat of silver paint applied to mimic a piece of middle stripe where the "H" had been removed.
BTW - I recently brought all of 1615's original windshield and rear window trim out of the attic to do a micro cleaning job on them. I was astonished to discover areas of HERTZ GOLD stripe overspray on them that I had not noticed prior! Yes, I left it on there!! That is HISTORY from 1966.
The stories that many of us have of our Hertz car's missing their "H's" way back in the day to attempt to disguise the fact that they were rental cars sure makes for compelling reading in this day and age!
Kieth