I envisaged blanked off dummy vents but upon comparing the pics, I realise it was completely absent.
Good observation Seanoss, never would likely notice unless I got a collection with the two variants.
The only other variation I have observed is the different shape raised border for the powerplus label on the later black version.

Here's my sole Corsair style mould. It has a thin layer of UV degraded plastic I want to scrape off before I paint it.

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IMG_20211018_175309_copy_1000x564.jpg (40.52 KB, 29 downloads)

Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!