The plane is 21" long with a 2.5" blade. The only visible marking is # 7 on the front . I am looking for the maker and or the possible value. It was given to my dad from his dad. My dad was 84 when he died 20 years ago so it's over 100 yrs old. Any help would be great.

Are there any other markings with words, letters or numbers on this plane, please? Perhaps they might be hidden somewhat because of wear and tear?