Recently, I received a copy of "The Handy-Volume Shakspeare" series from my Mum who told me that it belonged to her grandfather Richard Cullen. Of the original 13 volumes, this set comprises nine volumes, #VIII, #IX, #X, and #XI are missing. The set is not of any value - many copies are on sale on line for less than €20. Their condition is not great, further reducing value as a set.
There is no publication date on any of the books, though I believe they were are from the 1880s. Note the spelling of "Shakspeare" - this was a common spelling of the Bard's name in the 19th century.