Mid to Late 1800's British Butter Knife engraved "Grandmother"

This lovely antique English butter knife is approximately 150 years and at some point it was engraved with a loving inscription, "Grandmother".  It is identified as J. Yates and Sons on the back as well as a hard to read monogram.  In 1858 John Yates advertised as makers of "Crown and Britannia Metal manufacturer, established in 1780, at 37-38 Coleshill Street, Birmingham". An 1870 catalog describes the firm as "Crown & Britannia Metal, Spoons & Ladles, soap & dressing, case boxes, Railway Whistles, Dog calls and a large variety of other articles".  

What a darling gift to yourself if you are a grandmother or to someone else who is a grandmother!  8" long.