Aberdeen as i Scotland? Kind of far away from Philadelphia or NY but the silver connection would have been there.

I guess the razor definitely is connected to the plated silverware, brush and cup since the stamp on my tang is so similar. Only that there is no NY. Perhaps razor making wasn't really along their main line of business but they wanted to be able to sell complete sets and commissioned someone to make the razors for them?

From the information you have I would assume that the last decades of the 19th century would be a good guess for the age of my blade?

Pontus