Sherry - Thank you for your patience. I have some good news and some fair news.
This poor condition example of the 1750 edition of "Medulla historiae Anglicanae. Being a comprehensive history of the lives and reigns of the monarchs of England. From the time of ... Julius Caesar, to ... King William and Queen Mary ..." does have some very good value and many on the markets are in this fair condition...some have been sensitively repaired and this does enhance the value.
The book was republished and republished time and again every from the late 17th century through the mid 18th century. There are a good many examples on the market and in archives Worldwide with so many editions but the 4th edition is the earliest that I have found in 1694 so this gives you a sense of where 1750 editions stand.
What is good to see however is that these early surveys by William Howell retain good value as they do have collectors interest and this edition (in this state) would have a current market value of 300.00-350.00 (USD). Thus a restoration by a good binder would be worth looking into..as this seems to enhance the value by150.00-200.00 (USD).
The second book "The Complete Works of William Shakespeare" in good condition unfortunately is quite common by the date that it was published in London by Selfridges& Co. around 1910. The company according to library archives records was active as a publisher between 1909 and 1914 so this narrows the date and archival repositories attribute 1910 to this edition. The market however of Shakespeare compilations is a bit moderate Worldwide as every home library in the Victorian and Edwardian period had these and they were popular as gifts and home editions. Thus most popular publishers put out an edition of Shakespeare works from the mid 19th through the first quarter of the 20th century.
This particular Edwardian volume shows a current rare book value in the range of 25.00-35.00 (USD) in this very good shape. So it is a bit modest unfortunately but the condition does enhance the value and interest as well as the illustrations.
I hope this is more helpful than disappointing...and I am glad that you did not discard the early poor condition edition over the better condition Shakespeare. If you are interested in a book restorer or book binder in your region, I would be happy to assist with this as well. I do know US book binders well but many object conservators in the UK too. Please let me know your location and I will see if I can assist. I will place an additional offer incase that is of interest..no problem if not. It will just make it easy to find me if you ever return and want to discuss it.
All my best,
PS If you have other items of interest please remember my name. Any post addressed to “Kim D” at the head of the question will be sent to my inbox so I can help my return patrons first!
I would be more than happy to work with you again!