All three of the original Esci M60 kits have been reissued in the 2000s. Italeri reboxed the M60A1 (#6397) and M60 Blazer (#6391), making the same mistake Esci did by not making a 2 in 1 kit.
Italeri took Esci's mistake one step further by removing certain standard M60 parts so that if you bought the Blazer, you could not make a regular M60A1, only the IDF tank. Previously, if you bought either Esci's M60 Blazer (#5042) or the AMT/Ertl M60 Blazer (#8864), you got all the necessary parts to make the IDF version or the US Army M60A1.
Interestingly to note, while AMT/Ertl gives instructions to make a US tank and provides the camouflage scheme for a 7th Army MASSTER tank, they do not give US decals. Only the IDF markings are provided and you are instructed to put those on the 7th Army camouflage tank.
Another curiosity is the box art. It shows a tank without the Blazer armor, but with the IDF thermal shrouded gun tube, .30 cal and .50 cal machine guns and Urdan cupola. So the box art mixes up versions.
Revell of Germany released the former Esci M60A3TTS, and they did it right. They released it as kit #03057 and included virtually every part necessary to make a US Army M60A3TTS, an OPFOR M60A3 and a USMC M60A1 RISE/Passive tank. They even included the deep water fording snorkel. This kit flew off the shelves and was very hard to find. They included four different marking options and three different camouflage patterns.
An unusual boxing of the Esci M60A1 is one that is very rare. Gunze Sangyo released it as the "High-Tech Model" M60A1 RISE PASSIVE TANK. When this kit came out, it was in the $125-150 range. Since previous Gunze Sangyo "high tech" kits were often Dragon or old Tamiya kits with multimedia parts added, many people who saw this kit assumed it was the Academy copy of the Tamiya M60A1. I've actually read "reviews" written by modelers who say it was the Academy kit. That just tells me they never laid hands and eyes on the kit.
I have one that I bought ten years ago for $35 + $13 s/h. It is Esci kit #5039 with white metal reactive armor, grenade launchers, air cleaners and some sundry detail parts. Even at $48 delivered, I over paid for the kit. A better solution to get this version of the tank would be to find the old Esci M60A1 or Blazer and then buy the ERA sprues from Tamiya USA. That way you don't have to deal with the white metal parts.
That's the long history of what was my favorite tank kit of the 1980s. I bought one when I was a young lieutenant in Germany and M60A3TTS tank platoon leader. It was either released in 1989 or 1990.