Position CH

Add Add Add Add
Range: Exact Match ±1 ±2 ±3 ±4
Include: Alphabet I (pl. 1-131)
Alphabet II (pl.132-204, R1-6)
List: By plate number By closeness

Use the ± buttons to select the range (number of steps of leeway in either direction) to use when looking for a match. Checking an 'Add' box adds one point to the range for that position only. You may use an asterisk (*) in place of an unsure value, but in ONE box only. You can also uncheck one of the boxes to restrict your search to Alphabet I or II stamps only.

The results show the number of steps difference between your measurement and the accepted data. Example: if the result is shown as '-4' and your measurement was '6+', it is four steps below the recorded measurement for that plate/position of '8-' (remember the steps go 6+, 7-, 7, 7+, 8-). A low measurement (closer to the edge of the square) may occur due to excessive inking.

You can either display the results in order of the plate numbers or by "overall closeness" (or "weight", i.e. the sum of the squares of the differences in the number of steps for all four positions). This can help as the exact measurement to read can be a judgement call, so four close measurements may well be a more likely candidate than three exact and one a long way off!

Plating data last updated 20th December 2020

Fisher-Brown Measurements and Plating Notes for Position CH by Plate

Links in blue in the first column are to the picture of the registration sheet for the plate on the website of The Postal Museum. A link in red means that this lettering has been removed from the sheet (or there is no sheet for that plate), and goes instead to the appropriate page of Ian Wright's "Missing Imprimatur" database, which may have examples of issued stamps from the plate with this lettering.

The additional plating notes from the books have now been included in this version of the tool, and can be displayed as either the modified and extended set of abbreviations that are used in Mike Batty's revised work A Rearrangement Into Numerical Order of the Fisher-Brown Measurements ..., or as plain English text. You can switch between them, and between showing all plates or just the ones matched above, by clicking the buttons below.

If you think a stamp is from a particular plate, but want to check for alternatives, you can click the "Use" button in the appropriate row to insert the actual measured values for that plate into the search boxes above, then click "Search" to find other plates whose measurements are close.

Please note that these plating notes are currently being actively re-examined with the benefit of the latest information, so should be considered as a cross-check for difficult stamps rather than a primary determinant – the letter position measurements should be evaluated first.

Please contact if you come across anything that appears to be incorrect.