Vintage The Gripstand large mixing bowl

1950s era The Gripstand large mixing bowl made in England by T.G. Green & Co LTD. Church Gresley Patent No. 491517. Very heavy bowl measures 13” rim to rim, 13 7/8” from handle to handle, and 5 3/4” tall. Does have numerous manufacturers imperfections as well as the 3 triangular indentations on the inside bottom that I’ve seen on other bowls. One manufacturers inconsistent discolouration on rim. One old chip near rim from use. No cracks and rings true like a bell. Tried to get sound on video.