Thanks for the prompt reply. In my fit of nervousness and panic, I did not even think to check the back cover which does indeed mention the 120 counters.

If I had, I would certainly be convinced that I did not have the right sheet. Thanks again for the information; I will sleep easy tonight knowing my B10 is complete.
I know this was mentioned in a recent thread, but having a comprehensive checklist of module contents such as maps, counters, covers, pullouts, reference sheets, page counts, etc. would be a great addition to the site. For those of us coming back to the D&D fold after so many years, this would be an invaluable reference in evaluating our own collections for completeness helping to account for the bits and pieces which might have slipped away. (
BITD, I never removed a single item from my modules; however, my fellow adventurers removed anything with a perforation from their own modules. It makes one shudder.

) Anyway, if there is a formal effort underway to produce such a listing for this site, please let me know and I will be happy to contribute.