The next low end Model 57, the Home Watch Co. (HWCo) grade, was introduced in December 1866 with serial number 283001 in 7 Jewels (the following January, 11J versions were also offered), probably to compete with the newly founded National Watch Company. The barrel bridge was engraved Boston instead of Waltham possibly as camouflage to convey the impression that this low grade watch was not made by the AWCo. The William Ellery M57 was already engraved Boston, and at this time was changed to Waltham (see Ellery 711193). Note the absence of a key guard cup protecting the winding square and the absence of an applied index scale as on the better grades. The balance is also sprung under whereas both the Ellery and Bartlett were made sprung over around 1868. Although cannot be seen, this 1870 example has a cheaper escape wheel with toe-ended teeth; the Ellery was converted to the standard club tooth design around this time frame.
