Dont trust stickers or type plates - the only real ones are the month/year at gearbox housing left side and upper hydraulics housing + the two serial numbers for chassis and enginge hammered into the engine block or chassis.
Stickers and nameplates are too easy to manipulate.
It is also possible that
Zetor continued to build the "older" models 3320 to 7340
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or after face lift models like
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with the BK 6245 cab.
for a while in parallel with the then new Super model series 3321 to 7341
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and Major
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for certain markets. I don't want to rule that out, as Zetor had done something like that before.