1966 Mustang 2+2 Fastback - San Jose Assembly Plant. Really original car and has never had a full restoration. I think the engine compartment was detailed in the 1990s. After the radiator let loose last year, it sprayed everything with antifreeze and is in need of a cleaning. I decided to re-finish the engine compartment and do some detailing with leaving the engine in the car. I already bought a replacement decal kit. There was a service decal on the inner fender - it looked like the replacement with more of a silver/gray finish. However, when I started disassembling everything, I could see a decal under it. So I peeled off the top decal and this is the decal I found under it. It is much more of a reflective silver than the replacement. (I tried cleaning it up some and made it worse.) I didn't try to remove this decal yet, but there doesn't appear to be another. So I'm now wondering if this was the original service decal. If so, does anyone reproduce this reflective one?