Strange Oscar's Trash Race?

I've been a stop start collector of 2600 since the mid 1990's so have seen a lot of Atari carts and packaging etc over the years. Well OK I have recently been gathering a set of CCW games for a friend's little girl to play, she visits a lot and I remember my son loving them back when he was the right age. Anyhow, I recieved a new sealed PAL copy of Oscar's Trash Race from eBay today. the game was shrinkwrapped, and dusty as you would expect from a 1983 release. first thing that i noticed as odd was the language on the rear of box is all English, the other PAL CCW games all have multi Euro languages on rear of packaging. Next point is the tiny sticker covering Made in USA that states Made in Taiwan. On opening the box I also had trouble breaking the glue seal on the box flap, this is usually 3 small spots on '83 releases, on this box the glue was a huge smear right across the flap, splitting this left a lot of damage to flaps.
The manual is also odd for a PAL release, the language is all English instead of the multi language as normal, also the paper is completely different to any Atari game I have seen before, not shiny but a matt waxed finish on fairly decent grade paper. The Manual also has the tiny Made in Taiwan sticker on the back covering the old made in USA.
The cart itself is clearly new, the Pins have no scratches from use so I don't belive this is a repro, a "P" sticker is affixed to the rear of the cart. On testing the cart it is definetly PAL, the colours are all correct for a start.
I believe Oscar's is the rarest of the PAL CCW games, Big Bird & Cookie are very common, Alpha Beam a little more unusual, certainly no NIB around anymore. Was there some disparity with the relaease of the four CCW games? The Oscar I have seems almost a patch up of parts rather than a full supported release(NTSC box, pal cart, manual, very weird? The Overlay is a standard USA printed example BTW.

Any thoughts or am I just bored and a little anal today?

Best,
Chris