In Allards' hex editing guide, he states the byte offset (A) for finding the game version.
He is correct for all except Test of Time, which he has down as 31. It is in fact 32. Only a small correction I know but this might be useful for someone!
I tested this with the Midgard and the Time Threat Paradox scenarios, as well as various FW scenarios converted to ToT using CivConverter.
Hmmm. I have the patch. Maybe it is 31 for unpatched and 32 for patched? But how would applying a patch (to the civ2.exe) make a change to a scenario made with the unpatched version (Midgard)? Anyone like to supply a scenario from an unpatched version of ToT?