Vtech Sit To Stand Ultimate Alphabet Train Replacement Letter Blocks Lot of 3 Lot of 3 replacement letter blocks for VTech Sit to Stand Alphabet train. This is an INCOMPLETE SET, IN IMPERFECT CONDITION. (I have another set of 3 listed if you want to bundle!) See photos for damage/flaws. Stickers roughed up. Smoke free, pet friendly home. 106