Curio determination.
Relic determination is already spelled out as 50+ years old though getting particulars documented might be a good idea if there is any question of the guns history.
A Curio can be any firearm. The .44 Automag is now a Curio. If a gun maker goes completely out of business, has their factory bombed to non-existence, or the gun has not been made for some time you can get a ruling. You can get a ruling for _one specific gun_. If you had a modern gun owned by a President or a Rawk star you should be able to get it listed as a Curio with the submission of paperwork and waiting.
This list the ATF publishes is for Curios and Relics that this determination has been made otherwise a relic does not have to be specially listed if they are 50+ years old.
http://a257.g.akamaitech.net/7/257/...ccess.gpo.gov/cfr_2005/aprqtr/27cfr478.26.htm
Code of Federal Regulations]
[Title 27, Volume 2]
[Revised as of April 1, 2005]
From the U.S. Government Printing Office via GPO Access
[CITE: 27CFR478.26]
[Page 31]
TITLE 27--ALCOHOL, TOBACCO PRODUCTS, AND FIREARMS
CHAPTER II--BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES,
DEPARTMENT OF JUSTICE
PART 478_COMMERCE IN FIREARMS AND AMMUNITION--Table of Contents
Subpart C_Administrative and Miscellaneous Provisions
Sec. 478.26 Curio and relic determination.
Any person who desires to obtain a determination whether a
particular firearm is a curio or relic shall submit a written request,
in duplicate, for a ruling thereon to the Director. Each such request
shall be executed under the penalties of perjury and shall contain a
complete and accurate description of the firearm, and such photographs,
diagrams, or drawings as may be necessary to enable the Director to make
a determination. The Director may require the submission of the firearm
for examination and evaluation. If the submission of the firearm is
impractical, the person requesting the determination shall so advise the
Director and designate the place where the firearm will be available for
examination and evaluation.
[T.D. ATF-270, 53 FR 10493, Mar. 31, 1988]