The 2018 edition of the Scott Standard Postage Stamp Catalogue celebrates the 150th anniversary of the Scott catalogs. The title pages of this volume and other volumes in the 2018 Scott Standard catalog state that this is the 174th edition of the catalogs (and it is). In September 1868, John Walter Scott published his first stamp catalog. The catalog, titled A Descriptive Catalogue of America and Foreign Postage Stamps, Issued from 1840 to Date, is considered to be the first Scott stamp catalog.
The Scott catalog has come a long way since its humble beginnings as a 24-page bound pamphlet. The Scott Standard catalog lists more than 700,000 stamps from more than 600 stamp-issuing entities. Because the catalog volumes had grown so large that they were literally bursting at the seams, each 2018 Scott Standard catalog has been split into two volumes, A and B.
Almost 4,400 value changes occur among the listings for the Philippines. Scattered value changes can be found in the classic period, with a mix of increases and decreases. The 1863 2-real blue stamp (Scott 17) doubles in value, from $1,000 used to $2,000. The value for an unused example remains unchanged at $650. More than 4,300 value changes were made during a line-by-line review of the period from 1945 to date, resulting in mostly increases throughout.
Scattered increases can be found among the listings for Oman. The Sultanate of Oman 1971 1-rial dark violet high-denomination overprinted stamp (Scott 133) increases in value, from $120 mint to $130. The used value remains at $30. The 1974 100-baizas stamp commemorating the opening of Port Qaboos (157) moves upward, from $16.50 mint to $18. The used value remains at $5.
Scattered increases in value are found among the listings of Portugal issues. The 2003 set of three stamps commemorating the 100th anniversary of the Portuguese Automobile Club (Scott 2565-2567) moves upward, from $7.75 mint in the 2017 Vol. 5 to $9 in the 2018 edition and from $3.25 used to $5. The 2007 souvenir sheet of four (2938) from the set featuring motorcycles jumps to $9 mint and used, from $7 both ways. The value for any 61¢ single from the sheet increases from $1.75 mint and 85¢ used to $2.50 both ways.
Among the value changes for Puerto Rico, the 1873 1-peso red-brown stamp (Scott 3) issued under Spanish Dominion climbs to $600 unused, from $550 in the 2017 Vol. 5 of the Scott Standard catalog. The used value remains at $21.
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