The Microsoft Excel spreadsheet of basic PNC Catalog Numbers (at  http://www.USAstamps.com/references/PNC_Catalog/Numbering_System/Basic_PNC_Catalog_Numbers.xls) was updated on April 16, 2004, with the following changes:

• Added F37[psa]-B1111 to the "Flags" set of coil stamps.
• Added F37[psa]-S1111 to the "Flags" set of coil stamps.
• Added F37psa-S2222 to the "Flags" set of coil stamps.
• Added F37psa-S3333 to the "Flags" set of coil stamps.
• Added R23GW-V45 to the "Regular" set of coil stamps.
• Added R37SE-V3222 to the "Regular" set of coil stamps.
• Added R37SE-P11111 to the "Regular" set of coil stamps.
• Added S5S[psa]-P2222 to the "Service-inscribed" set of coil stamps.
• Added S10L[psa]-S44444 to the "Service-inscribed" set of coil stamps.

These new PNC Catalog Numbers in the "Flags" set represent the original printing by Banknote Corporation of America (BCA) and the reprint by Sennett Security Products (SSP) of the 37¢ USA Flag coil of self-adhesive stamps with spaces between the stamps (F37[psa]-B1111 and F37[psa]-S1111, respectively), and the new cylinder combinations (S2222 and S3333) on the 37¢ USA Flag coil of 100 self-adhesive stamps produced by Sennett Security Products.

The new PNC Catalog Numbers in the "Regular" set include the new cylinder combination V45 of the 23¢ George Washington self-adhesive coil of 100 stamps by Avery Dennison, the new cylinder combination V3222 of the 37¢ Snowy Egret coil of 100 self-adhesive stamps produced by Avery Dennison, and the new reprint (P11111) of the 37¢ Snowy Egret coil of 100 self-adhesive stamps produced by Ashton Potter.   Rolls of stamps from R23GW-V45 and  R37SE-V3222 exist with 10PV/10VP and 10VP/10PV.  The extended PNC Catalog Numbers for these varieties are as follows:

• R23GW-V45<10PV/10VP>
• R23GW-V45<10VP/10PV>
• R37SE-V3222<10PV/10VP>
• R37SE-V3222<10VP/10PV>

The new PNC Catalog Numbers in the "Service-inscribed" set are for the new printing of the self-adhesive, non-denominated (5¢) Seacoast stamp with cylinder combination P2222 from rolls of 3,000 stamps with spaces between the stamps and the newest cylinder combination (S44444) of the of the non-denominated (10¢) Lion self-adhesive stamps with spaces.

In addition to the items listed above, a new luminescent ink variety was discovered on the 37¢ USA Flag coil with water-activated gum (from rolls of 3,000 stamps) that shows a reaction to shortwave ultraviolet (UV) light in the red stripes of the design.   Following the PNC Catalog Numbering System rules as described on http://www.usastamps.com/references/PNC_Catalog/Numbering_System/Extended.htm#Ink, the extended PNC Catalog Number for this variety is as follows:

• F37wag-S1111(lum)

Rich Nazar
Richard.Nazar@comcast.net