22. Machin (E) 20p-29p

Y1679

• 1994.020.01 is AY2 phosphor.
• 1995.020.01 is AY3 phosphor (much paler). Not recognised by SG.

Y1680

• The gum on 1997.020.01 shows whiter than that of 1996.020.02 (1996.020.02 also curls more).
• 1997.020.01 has a 4mm CB, whilst the band on 1997.020.02 is 4.5mm.
• 1998.020.01 originates from the mixed value £1 (FH42) booklet
• 1998.020.02 originates from the mixed value £2 (FW10) booklet.

Y1681

• 1997.020.03 originates from the BBC 75th Anniversary Prestige Book (DX19).

Y1682

• In theory at least; 2003.020.01 should be the darkest gum, 2004.020.02 should be whiter, and 2005.020.01 should be whiter still.
• Cylinder 2 only appears on 2003.020.01
• Cylinder 4 only appears on 2005.020.01
• Unfortunately Cylinder 1 can be from either 2003.020.01 or 2004.020.02 and Cylinder 3 can be from 2004.020.02 or 2005.020.01.
• 2004.020.02 was printed on paper borrowed from Enschedé to cover shortages at Byfleet.

Y1751

• 1996.020.03 has 2 Short-Wave bands while 1997.020.04 has 2 Long-Wave bands.
• 1996.020.03 originates from a mixed value £1 booklet (FH41).
• 1997.020.04 originates from mixed value £1 booklets (FH41a and FH41b).

Y1751m

• 2010.020.01 originates from the Classic Albums Prestige Book (DX48)
• 2010.020.02 originates from the London 2010 Miniature Sheet.

U2995

• 2011.020.01 no source or date codes. T2a cuts.

Y1682b

Y1751n

• 2009.22.02 originates from Treasures of the Archive Prestige Book (DX46).
• 2010.22.01 originates from the Classic Albums Prestige Book (DX48).
• 2010.22.02 originates from the 350th Anniversary of the Royal Society Prestige Book (DX49).

Y1683

• SG Specialised does not differentiate between the sheet, coil snd booklet stamps.
• 1993.025.03 originates from seven single value 50p booklets (FB67-73).
• 1993.025.04 originates from five single value £1 booklets (FH33-37).
• 1993.025.05 originates from 5 single value £2 booklets (FW1-FW5).
• BP* As all panes of similar value are the same there is only one entry per value.

Y1684

• SG Specialised does not differentiate between the sheet, coil snd booklet stamps.
• The Gum colours of 1995.025.09, 1995.025.10 and 1995.025.11 are blue, white and creamy respectively.
• 1995.025.01 (YF) originates from two single value £1 booklets (FH37a-38)
• 1995.025.02 originates from 2 single value £2 booklets (FW6-FW7).
• BP* As all panes of similar value are the same there is only one entry per value.
• 1995.025.04 has two short bands at the top.
• 1995.025.04 (YF) originates from two single value 50p booklets (FB74-75). As both panes are the same there is only one entry.
• 1995.025.07 (BF) originates from two single value £1 booklets (FH38a-39)
• 1995.025.08 (BF) originates from the single value £2 booklets (FW7a).
• BP+ As all panes of similar value are the same there is only one entry per value - There is no Blue Fluor version of the 50p booklet.

Y1752

• 1994.025.02 has 3mm Phosphor Bands, whilst the two Bands on 250.5 are 4mm.

Y1685

• The gum on 260.8 shows whiter than that of 260.5 (260.5 also curls more).
• SG Specialised does not differentiate between the booklet and sheet stamps of 260.8.2 and 260.8.3.
• 260.8.2 is from the BBC 75 Prestige Book (DX19).
• 260.10.1 and .2 has 9mm Phosphor Bands whilst 260.10.3 has 10mm Bands.
• *260.10.1 originates from two mixed value £1 booklets (FH42-43) and 2 mixed value £2 booklets (FW10-FW11). As all panes are of different make-up there are four separate entries to cater for all. All have non-fluorescent paper. Sequentially in the above list;
  1. First 260.10.1 is from the £1 booklet FH42.
  2. Second 260.10.1 is from the £2 booklet FW10.
  3. Third 260.10.1 is from the £1 booklet FH43.
  4. Fourth 260.10.1 is from the £2 booklet FW11.
• 260.10.2 is from the £1 booklet FH43 (fluorescent paper) - Deegam states this should only be from cylinder Q2 booklets. SG Specialised doesn't mention a fluorescent variety.
• 260.10.3 is from the World Changers Prestige Book (DX23).

Y1753

• 260.6 reacts to short-wave ultra-violet. 260.7 reacts to long-wave.
• *260.6 originates from 2 mixed value £1 booklets (FH41-FH42a) and 2 mixed value £2 booklets (FW9-9a). As all panes are of same make-up so there are ony two separate entries (one for each value). Sequentially in the above list;
  1. First 260.6 is from the £1 booklet FH41 or FH41a.
  2. Second 260.6 is from the £2 booklet FW9 or FW9a.
• +260.7 originates from 2 mixed value £1 booklets (FH41a-FH42b) and 2 mixed value £2 booklets (FW9a-9b). As all panes are of same make-up so there are ony two separate entries (one for each value). Sequentially in the above list;
  1. First 260.7 is from the £1 booklet FH41a or FH41b.
  2. Second 260.7 is from the £2 booklet FW9a or FW9b.
• From the above note you can be assured that you are looking at 260.6 if you have a copy of FH41 or FW9 and a copy of 260.7 if you have a copy of FH41b or FW9b.

Y1686

• SG Specialised does not differentiate between the sheet and booklet stamps of 260.9.1 and 260.9.2.
• 260.9.2 is from the BBC 75 Prestige Book (DX19).

Y1687