Don’t sell the tech just yet. Put it aside and give it another go next month with a fresh blade. You might be pleasantly surprised.
The seller told me the year of my #24 Ball End. There is supposed to be a date code somewhere on the razor.
Perhaps we could impose on @mr-razor to assist?
Thank you very much. Appreciate gaining new knowledge.you can know the age of razors without date code only, if you have a complete set with blades. Then you can look to the date code on the blade. If you found an old Ad, then you know a year in which it was sold, but not the exact year of its manufacture