Can someone please help me out here? I found two of these while searching in junk stores in SC and would like to know more about them. IE their U# and approximate value. I may be willing to part with one of them but want to know more.

This view is from the side and the umbrella is approximately 10 1/2" across and it sits about 7" high. I have looked and think it might be a U-878 or U-908? I also think they were manufactured by Jeffery DeWitt. But not entirely sure so any help would be appreciated. It is ink stamped with Mfg. Mar. 1930. This all seems to point to a U-878 but I want to make sure. A photo of the bottom is posted here and an overall of my SC finds is posted here [id=313175116].

I think I have been bitten by the mud bug and am going to have to get the guide so I can identify my future finds.

All help is appreciated. Thanks for all the help its a U-908