Need Help Henry Sears and Son

[ItalianJoe]

I have 3 Henry Sears and son straights. The first one from the top only says Manufatured by Henry Sears and Son. No Number or country of origin.
The second one reads "Clean Shaver 551" Henry Sears and Son
ast one reads "Clean Shaver 362" Henry Sears and Son. 1865

All have the date 1865. Here is what I know:
The company was founded by Henry Sears in 1865 but the Name Henry Sears and Son was not used until 1883.
Some were made in the USA and some were made in Germany and England.
I have heard that Henry Sears and Son was bought out in the early 1900's but used the name until the 1950's.
All are excellent shavers and fairly easy to hone.

Any info would be great. There is not that much I can find on the web.

Thanks