5th Edition Dictionary---How To Tell?

While shopping for a Pre-Anniversary dictionary I've acquired a very nice, unwanted copy of the Anniversary Edition dictionary; seller posted the penultimate copyright date, 1916, and not the actual printing date, 1930.

I'm not really concerned about the $2.50 purchase, but now, short of emailing all booksellers to double-check their editions, I think I've found a way to distinguish the Pre-Anniversary volumes: could anyone confirm for me that the number of pages in the 1916 edition (whatever the last printing was before Anniversary) is 208---and whether this distinguishes it absolutely from Anniversary editions (which all seem to be 260 pages)?


(by routine-sibling for everyone)