From militaryfactory.com
T-62 - Base production vehicle
T-62K - Commander's Vehicle
T-62D - Additional armor and specialized anti-tank system.
T-62D-1 - Updated T-62D variant with newer powerplant.
T-62M - Modifications including anti-tank defense system and added passive armor.
T-62M-1
T-62M1 - Updated engine; added passive armor
T-62M1-1 - Sans passive armor and anti-armor defense system.
T-62M1-2
T-62M1-2-1
T-62MV - Features explosive reactive armor
from armscontrol.ru
T-62 This is the basic T-62 model, which essentially was a stretched T-55 chassis, with a new suspension, and a new turret equipped with the U-5T (2A20) Rapira 115-mm smoothbore gun. The gun has the new Meteor two-axis stabilization system.
T-62K This is the command tank variant of the T-62, and like earlier types, has one additional R-122 radio, a TNA-2 navigation system, a 4-meter antenna, but less ammunition. The corresponding command tank for the T-62M is the T-62MK.
T-62M (Also called T-62A) This tank includes the addition of a 12.7-mm antiaircraft DShK machine-gun on the loader's hatch. This modification included modification of the turret right side.
T-62M Model 1975 This is the T-62M with the addition of the KTD-1 laser rangefinder over the main gun mantlet.
T-62E The war in Afghanistan forced the Soviets to up-armor their tanks to provide better protection from infantry antitank weapons, such as the RPG-7. This upgrade led to the BDD appliqu? armor package. This package consists of a panel of armor on the glacis plate, two panels of "horse-shoe" armor around the front of the turret, and an optional package of belly armor for anti-mine protection. The total package adds 3.9 tons to the weight of the vehicle.
T-62M1 This further modification of the T-62A includes much of the modifications added to the T-55 to make the T-55AM2PB. These improvements include the Volna fire control system with the BV-62 computer, Meteor M1 gun stabilization package, TShSM-41U sight, KDT-2 laser rangefinder and 1K13 guidance sight package. This tank is equipped with the AT-12 Sheksna laser-guided antitank guided missile, which operates in much the same way as the AT-10 STABBER ATGM. This tank also includes the uprated V-55U engine, and the R-173 radio system. This vehicle is also usually fitted with the BDD appliqu? armor package.
T-62MV This is the T-62M fitted with the ERA package found on the T-55MV.
This seems to fit most closely with SPMBT. Although not completly. Well, then it seems that SPMBTs T-62 designations are modeled on Russian sources and not the messy contradictory western variations. I'm impressed
