While testing the 0.3 release starting with 1850 I noticed that the LMS Class 4F 0-6-0 was available with an introduction date of 1492 and a retirement date of 1941.
Is the intro date more like 1892?
I believe this has already been reported
http://forum.simutrans.com/index.php?topic=3736.msg36358#msg36358
Jamespetts will be able to say whether it's been fixed.
It will be fixed for the next release. Thank you for the report!