C.V. Heljestrand is the Swedish make in this archive, from the Eskilstuna school. The letters MK that appear on the razor are the point of confusion: MK is a trademark series of the firm, not a year and not a serial number.
Sweden built razors around Eskilstuna, and the names of the school run together in the collector guides: C.V. Heljestrand, P. Heljestrand, J.A. Hellberg and Ernst Jonsson. The only dated entry for the school belongs to John Engstrom of Eskilstuna, about 1874 to 1918, and he is a different firm.
The designation MK with a number is a trademark series rather than a date, and no years of operation for C.V. Heljestrand itself are published in the sources that were checked.
1 C.V. Heljestrand models are catalogued with their production years, specs and safety notes.
Browse the models →It is the firm trademark series, not a year and not a serial number. No key turns the MK designation into a date, and the sources give no years of operation for C.V. Heljestrand itself.
Compiled from 50 published sources — the source library.