My Newest Arrival!

After looking at several pictures of Charlie NIB, I think it's a similar situation to the Thomas in "Slippy Sodor" pack (which came out the same year).
That pack first featured Thomas with a HiT face



Which was later changed to Fisher-Price's current (at the time) face


I found several pictures of Charlie, most of which actually had the unpainted basis for the ice cream car








I only found one with the painted buffer beam


I'm not sure though, this is just what I found. I also noticed in your first picture that one Charlie has some white lining on the front of his, uh, boiler? I'm a big Thomas fan yet know practically nothing about real life trains. Anyway, the other doesn't have that. Looking at eBay, it looks to be a sticker but I'm not sure since I've never owned a Charlie. All in all, I think one of the two is an early variant like the whole Thomas in "Slippy Sodor" thing. That's my thoughts and thanks for reading! 
(Sorry if some or even none of the images show up, I haven't posted in a while, I'll try to fix it if that's the case!)