If I resubmit a slabbed book, does it get the same registration number?

[Boba]

. . . and is there any advantage to me cracking the book out myself and submitting it raw?

. . . and If I did the later, should I send the label?

[Gemma]

If the book is submitted for grading (whether in the case or not) it will be given a new number and treated as a new book. If you choose to crack it out prior to re-submission we would ask that you send in the label (either with the submission or at a later date) to help keep the census accurate.