I just discovered another variation of the 4th issue grey VIP Mad Money Lady Luck card from Las Vegas. The originally listed card had a space for a signature strip but no actual white strip. The new found card has the white strip. While adding that card I discovered the red card listed under the 4th issue did not actually have a registration mark after Mad Money so it was really a 3rd issue card. So that card was moved to the 3rd issue and there are now 3rd issue red card with and without the white signature strip.
Here's a scan of the new found grey card and the back of the originally listed grey card without the white strip.