er ▁can ▁take ▁the ▁registry ▁number ▁and ▁use ▁it ▁on ▁a ▁new , ▁and ▁often ▁lo oted , ▁anti qu ity . ▁Since ▁the ▁invent ory ▁descri ptions ▁are ▁kept ▁vague ▁it ▁isn ’ t ▁hard ▁to ▁find ▁an ▁artifact ▁that ▁looks ▁similar ▁to ▁the ▁one ▁that ▁was ▁just ▁sold . ▁Material ▁that ▁was ▁lo oted ▁as ▁recently ▁as ▁a ▁week ▁ago ▁could ▁il leg ally ▁enter ▁the ▁legal ▁market ▁through ▁an ▁exchange ▁of ▁registry ▁numbers . ▁The ▁tour ist ▁could , ▁of ▁course , ▁be ▁caught ▁trying ▁to ▁take ▁the ▁anti qu ity ▁out ▁of ▁the ▁country ▁without ▁a ▁permit . ▁But ▁even ▁if ▁they ▁are , ▁it ’ s ▁hard ▁to ▁fault ▁the ▁deal er . ▁After ▁all ▁they ▁are ▁under ▁no ▁oblig ation ▁to ▁let ▁tour ists ▁know ▁that ▁they ▁need ▁an ▁export ▁permit . ▁ <0x09> <0x09> ▁De al ers ▁claim ▁that ▁most ▁of ▁their ▁anti qu ities ▁come ▁from ▁private ▁collections ▁and ▁are ▁purchased ▁leg ally . ▁By ▁legal ▁they ▁mean ▁from ▁collections ▁that ▁were ▁completed ▁before ▁ 1 9 7 8 ▁when ▁it ▁was ▁still ▁legal ▁to ▁exc av ate ▁on ▁private ▁property ▁and ▁collect ▁artifact s . ▁It ▁is ▁difficult ▁to ▁prove ▁otherwise ▁because ▁it ▁would ▁take ▁a ▁large ▁amount ▁of ▁resources ▁to ▁investigate ▁the ▁source ▁of ▁anti qu ities . ▁▁ <0x09> ▁“ I ▁have ▁a ▁license ▁in ▁my ▁window ▁dated ▁to ▁ 2 0 0 1 , ▁no ▁one ▁has ▁ever ▁said ▁anything ▁and ▁I ▁am ▁not ▁changing ▁it ▁until ▁the ▁inspect or ▁makes