I know there are over 80 cards that have not been realesed on VGHD & ive worked out who most of them are, but there are a handful of cards that are unknown & havnt been able to work out who is on them.

The unknown card numbers are:

102
103
104
105
128
267
500
501
502
503
512

Is there any chance of knowing who is on these cards and if they are likely to be released?

512 might be another Ariel show but your right one can't be sure of that.

It could be but ive noticed each model has either 2, 4 or 6 cards in their sequence which would put Ariels total to 7. It could be another card they made for Christmas though, cos Natali Blonds Merry Christmas card came before it and Totem may have had to choose which they wanted to use for a Christmas themed card...I could be wrong though! lol
The only way to find out is to ask TotemRex I guess ;)

There is no real knowing... with one exception...

Don't look at my avatar to take a shot at the first four.

128 Sandra Sanchez (& possibly Deny)

There is only one Keana Moire at 269.
265, 266 & 267 could equally well be Keana as Mitsouko.
50x some model where the shoot did not go well?
512 with 2 Natalia and 4 Ariel and 2 Ariel Trisha... I would go Natalia.

128 Sandra Sanchez (solo) with a gun/pistol and pink racing dress (i.e. the same as Demi/Podium #114)...;)