This circular One Hour Parking Sign is a classic 1920's design. Note the portable cast iron base - which remains available even today.

This circular One Hour Parking Sign is a classic 1920's design. Note the portable cast iron base - which remains available even today.

This Private No Parking sign was popular in chicago in the 1920's.

This Old-School Parking Sign was presumably posted at doctor's offices in the 1930's.

This Prohibition era No Parking Sign has accumulated some serious rust.

Two women pose with a No Parkin Sign from the 1940's.

A circular, 1940's era parking sign from France.

A black and yellow 1940's era No Parking Sign.

A strangely shaped parking sign that was designed to hug a parking meter pole in 1940's.

A mid Century Parking Sign for the Boys in Blue.

A cute 1950's Parking Sign with a whimsical graphic.

Beaded reflective sheeting becomes dominant.

This hand painted wooden Parking Sign from Milwaukee dates back to the 1950's.

A rusting embossed No Parking Sign from the 1960's.

The Sign restricted parking in Washington DC during LBJ's second inauguration.

The 70’s saw the introduction of parking signs with No Parking graphic symbols and use of the prohibition red slash.

Off-street parking signs for private lots become popular. Freed from DOT regulations, property owners can start to insert their own personality (or humor) onto their parking signs.

This 1980's era No Parking Sign was somewhat obscured by plants and foliage.

Embossed No Parking Loading Zone Sign from the 1980's these embossed metal signs - usually nonreflective - were phased out in the 1980's.

A wordier, more informative No Parking Sign from the 1990's.

Private Parking Signs become the largest market. Free spaces are at a premium.

This prohibitive, red Valet Parking Sign includes an abundance of information and a car tow graphic. Federal parking sign standards requiring reflective parking signs become the law – even for private parking lots, as long as the are publically accessible.

These days, Parking Signs have become increasingly specific; expectant mothers get their own parking spaces at Hospitals.

Compact cars get preferential treatment too: just check out this sign and accompanying graphic.

These crisp new parking signs are available now at myparkingsign.com.