Found this on ODOT regarding Auto License Plates:
803.525 Number of plates issued. The Department of Transportation shall issue two registration plates for every vehicle that is registered by the department except as otherwise provided in this section. Upon renewal or when otherwise provided under ORS 803.555, the department may issue stickers in lieu of or in addition to registration plates. The following shall be issued plates as described:
(1) Only one registration plate shall be issued for a moped, motorcycle, trailer, antique vehicle or vehicle of special interest registered by the department.
(2) Only one plate shall be issued for a camper that is registered. Stickers may be issued in lieu of a plate. [1983 c.338 Â§258; 1985 c.668 Â§12; 1989 c.43 Â§27; 1991 c.407 Â§28; 1993 c.741 Â§119a; 2001 c.25 Â§1; 2003 c.655 Â§114]
Then I found the definition for Antique Vehicle and Special Interest:
Antique Vehicle Plate:
Issued to a vehicle that is older than one-half the number of years between the current year and 1900. Vehicle must be maintained as a collectorâ€™s item.
Special Interest Plate:
Issued to a vehicle that is maintained as a collectorâ€™s item and is at least 25 years old at time of application or vehicle sanctioned as a vehicle of special interest by an established organization that provides for recognition or is a street rod as defi ned by ORS 801.513. Vehicle may only be used for exhibitions, parades, club activities and similar uses. Owner of vehicle may use old, out-ofseries plate(s), a current-issue plate or DMV may issue plates as pictured. DMV must view and approve any plate used by the owner.
DMV will provide a permanent â€œSpecial Interestâ€� sticker for plates in current use.