CCM Apache

I picked up a CCM Apache today. It has a shimano coaster brake 333 hub mated with a 24" made in Canada wheel set. 

The there are two serial numbers. On the lower seatpost its E644658 but across the bottom bracket it has 704629021. The bb # looks to have been added after the paint. It also has a neighborhood watch sticker on it saying its been marked so police can identify it. I suspect the sticker and the bb# are related. 

Any idea what year this bike would be and what years this model was manufactured?