Appleton's Valentine Express, San Francisco. Printed frank with Valentine delivery instructio (Image)

E. $ 3,000-4,000

Comstock's City Letter & Parcel Delivery, San Francisco. Brown local post imprint with black (Image)

E. $ 1,500-2,000

Earley's San Francisco Letter Express. Five-line label with 630 Montgomery Street office addr (Image)

E. $ 1,500-2,000

Earley's San Francisco Letter Express. Five-line label with 507 Montgomery Street office addr (Image)

E. $ 500-750

Frey's Valentine Express, With Compliments of St. Valentine, San Francisco. Red printe (Image)

E. $ 3,000-4,000

Frey's Valentine Express, With Compliments of St. Valentine, San Francisco. Red printe (Image)

E. $ 3,000-4,000

Gahagan & Howe's City Express, San Francisco. Beautifully struck blue double-line oval "City (Image)

E. $ 750-1,000

Gahagan & Howe's City Express, San Francisco. Clearly struck grayish-blue double-line oval "C (Image)

E. $ 750-1,000

Private Post Office, San Francisco, 15c Blue on 3c White entire (123LU2a on U58). Elaborately (Image)

E. $ 2,000-3,000

Public Letter Office, San Francisco, 15c Blue on 2c Black entire (125LU3 on U54). Elaborate l (Image)

E. $ 2,000-3,000

Robinson & Co.'s San Francisco Express. Blue printed ribbon-style frank with services describ (Image)

E. $ 1,500-2,000

Robinson & Co.'s San Francisco Express. Blue printed ribbon-style frank with services describ (Image)

E. $ 1,500-2,000

Robinson & Co., San Francisco. Full and clear strike of "Robinson & Co. City Delivery" (Image)

E. $ 1,500-2,000

Swift's City Express. Bold strike of blue oval handstamp with matching "Paid" oval on buff co (Image)

E. $ 1,500-2,000