These are tokens used by California public transit companies for fares. Most are from the 1940's to 1960's.

Copper-nickel, 16 mm, 2.68 gm
Obverse:
SAN FRANCISCO
GOOD FOR ONE FARE
Reverse:
MARKET ST. RY. CO.
Samuel Kahn PRESIDENT

Brass, 16 mm, 2.24 gm
Obverse:
Large SF
MUNICIPAL RAILWAY
Reverse:
Large SF backwards
SAN FRANCISCO
ONE FARE

Zinc, 16 mm, 1.43 gm Obverse:
KEY SYSTEM / ONE FARE
Reverse:
GOOD FOR ONE FARE

Brass, 16 mm, 1.91 gm
Obverse:
KEY SYSTEM OAKLAND / 1945
Reverse:
GOOD FOR ONE LOCAL FARE

Copper-nickel, 16 mm, 1.95 gm
Obverse:
KEY SYSTEM OAKLAND / 1950
Reverse:
GOOD FOR ONE LOCAL FARE

Copper-nickel, 16 mm, 1.84 gm
Obverse:
EAST BAY TRANSIT COMPANY
Reverse:
GOOD FOR ONE FARE

Bronze, 23 mm, 3.75 gm
Obverse:
MARE ISLAND FERRY
Reverse:
GOOD FOR ONE FARE

Mare Island was a large US Navy base located near Vallejo, California. Supposedly the Spanish governor lost his female horse and found it on the island.

Brass, 16 mm, 1.75 gm
Obverse:
ALAMEDA CONTRA COSTA / TRANSIT 1961 DISTRICT / AC TRANSIT
Reverse:
AC TRANSIT / GOOD FOR ONE LOCAL FARE

Brass, 16 mm, 1.82 gm
Obverse:
ALAMEDA CONTRA COSTA / TRANSIT 1968 DISTRICT / Ready Fare
Reverse:
AC TRANSIT / GOOD FOR ONE LOCAL FARE

Copper, 23 mm, 5.12 gm
Obverse:
SANTA CLARA VALLEY TRANSPORTATION AUTHORITY / ADULT / VTA
Reverse:
SINGLE RIDE / ADULT / A

Santa Clara County is a few miles south of San Francisco. These were issued and used in the 1980's.

Copper-nickel, 16 mm, 2.55 gm
Obverse:
San Jose Mission and palm tree
SAN JOSE CITY LINES
Reverse:
GOOD FOR ONE FARE

Brass, 23 mm, 4.44 gm
Obverse:
SAN MATEO COUNTY TRANSIT DISTRICT / SAMTRANS / RWM / A
Reverse:
GOOD FOR ONE LOCAL FARE / A

San Mateo County is a few miles south of San Francisco. These were issued and used in the 1980's. RWM is the manufacturer, the Roger Williams Mint of Attleboro, Massachusetts

Brass, 16 mm, 1.96 gm
Obverse:
SANTA CRUZ TRANSIT CO. / SCT
Reverse:
GOOD FOR ONE FARE / SCT

Brass, 16 mm, 1.81 gm
Obverse:
SACRAMENTO CITY LINES
Reverse:
GOOD FOR ONE FARE

Copper-nickel, 16 mm, 4.49 gm
Obverse:
City logo
STOCKTON CITY LINES, INC.
Reverse:
City logo
GOOD FOR ONE SCHOOL FARE

Copper-nickel, 16 mm, 1.49 gm
Obverse:
FRESNO CITY LINES
Reverse:
GOOD FOR ONE FARE

Copper-nickel, 16 mm, 1.45 gm
Obverse:
LOS ANGELES RAILWAY
Reverse:
GOOD FOR ONE FARE

Copper-nickel, 16 mm, 1.56 gm
Obverse:
LOS ANGELES TRANSIT LINES
Reverse:
GOOD FOR ONE FARE

Copper-nickel, 22 mm, 5.29 gm
Obverse:
PASADENA CITY LINES, INC.
Reverse:
GOOD FOR ONE FARE

Copper-nickel, 16 mm, 1.94 gm
Obverse:
City skyline and ship
LONG BEACH LINES
Reverse:
City skyline and ship
GOOD FOR ONE FARE