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Hi Steven. Your weight is 'Old English', probably from Richardson, but it may be a good Walsh Walsh example (I need to check out the canes a bit more to see if I can distinguish which). These makers tended to make large pieces, sometimes with the lipped foot that yours has. As for date, probably early 20th Century - but Walsh Walsh kept going until 1950, and the style of their paperweights changed very little.
There is a short article on identifying Old English paperweights on my website.
Alan