According to info I have found this radio is simply a repeat of the model 48-360. ( the first 2 digits signify the year of manufacture.
It also seems to indicate that these are USA radios, not Canadian. I guess that may be open to discussion.
Have a look at this. It may help. — http://www.nostalgiaair.org/Resources/633/M0013633.htm
John G. VO1 CAT