I would agree with you Jakko, but it turns out there is some confusion on the types of Sherman tanks delivered to Sweden.
This source
http://tanks.mod16.org/2016/09/30/sw...f-the-sherman/ states: “first one M4A2 and one M4A4 without weapons, then a Firefly with the Continental radial engine and one M4 with the 10,5 cm howitzer", which differs a lot from the list made by Stefan Karlsson of the Swedish Tank Museum. He commented “The 4th tank that was scrapped early 1950's? was probably an M4A4 since we still have a spare Multibank engine. Probably lifted out to be spare engine for the Firefly. But if this 4th Sherman was a Firefly or not I can not say at the moment.”
Currently research is under way to find out more details. It would be great if we could contribute to that.