United States Postage Meter Stamp Catalog/GROUP OA – Official Armed Forces government business mail franks/Sub-group OA-FPO: Stamps with "FPO" (Fleet Post Office) in the town mark but without indication of which military service used the meter

Sub-group AR-FPO: Official Mail meter stamps with "FPO" (Fleet Post Office) in the town mark but without indication of which military service used the meter

 * Some of these stamps are quite elusive but their actual rarity is not known.

Type OO-IC4 or OO-A2.2 in previous editions

'''OA-FPO1. "Pitney Bowes 5313"'''.
 * Corresponds to Type IC4.1, OO-A2.2 (part).
 * Value figures with wide wavy-line triad at left and no symbol at right (does not print fractions of a cent).
 * When printing dollar values a narrow wavy-line triad appears left of the dollar number.


 * Meter numbers: MeterCat 5 spaces.jpg 3020000 series
 * V/F: MeterCat 5 spaces.jpgUSA meter stamp wide triad symbol.jpg .00 MeterCat 5 spaces.jpg ≋ 1.00♦ MeterCat 5 spaces.jpg (range: MeterCat 5 spaces.jpg.01 to 9.99)

♦  Stamps with dollar values show a small wavy-line triad at left of the dollar number. These stamps resemble Type OO-A2.1 stamps. They can be differentiated by the placement of the decimal and the right-most number. See close-up scans at right.


 * a. Town and state at top of town mark, "FPO" and 5-digit number at bottom
 * b. As a but with 9-digit number at bottom
 * c. "FPO" and town name or abbreviation at top of town mark, 5-digit number at bottom
 * d. As c but with 9-digit number at bottom

Type OO-IE1 or OO-A4 in previous editions

'''OA-FPO2. "Pitney Bowes 6500" series'''.
 * Corresponds to Type IE1, OO-A4.
 * As previous OO-A types but the value box is much wider than tall.
 * A. Wavy lines at left in value figures, 2mm tall ( ≋ )
 * Meter numbers: 6250000 series
 * V/F: MeterCat 5 spaces.jpg ≋ 0 .00 ≋ MeterCat 5 spaces.jpg (range: MeterCat 5 spaces.jpg.001 to 99.999)


 * a. Town mark with town and state at top, FPO  and 5-digit number at bottom
 * b. As a, but with 9-digit number at bottom
 * c. Town mark with FPO  and town designation at top with 5-digit number at bottom
 * d. As c, but with 9-digit number at bottom
 * e. Town mark with FPO AP  or  FPO AE  at top, 5-digit number at bottom
 * f. Town mark reads:MeterCat 5 spaces.jpg FPO SAN FRANCISCO / 96654 (without state) MeterCat 5 spaces.jpg(6250128)