1912 – Jepsen Bros.

31 May 2011

1912

6172 Baker Street

I have a 1912 mark from Jepsen Bros., but this one has the date upside-down.

1905 – R. H. Hahn

30 May 2011

1905

1042 63rd Street

Here’s another example of the mysterious mark I found on Alcatraz earlier this year. Now it’s revealed as a unique crescent design, but I couldn’t decipher the name until I found “Robt H” Hahn in the directory. He was listed that year as living at 3043 Grove Street (now MLK Way).

It appears that the R and the N are reversed. Perhaps a better example will turn up in Berkeley.

1904 – Contra Costa Construction Co.

29 May 2011

1904

925 63rd Street

1901 – Peterson & Adler

28 May 2011

1901

969 63rd Street

This is the fourth 1901 mark I’ve found from these guys, and the best preserved.

1946 – Berkeley Cement

27 May 2011

6616 Whitney Street

There were two marks on this driveway, the other with the year upside down. I came home and saw that my previous example also had an upside-down date, so this is the right one and the earlier one is the variant.

1942 – J. Anderson

26 May 2011

1942

6534 Tremont Street

J. Anderson marks are not rare, but they have a short date range that now extends from 1937 to 1942.

1940 – Aaron Dahlquist

25 May 2011

1940

575 Haddon Road