Type 19                        Type 20

William Dawbarn & Co. were a firm of Timber Merchants trading in Liverpool.

As yet I have been able to find very little information on the firm other than a reference to a publication being:

 "...printed at the private printing press of William Dawbarn, Liverpool."

1868. Unofficial overprint type 19 in black.

a) Vertical overprint, reading upwards

PP57 1d lake-red (SG 43 or G1)
Plates 125, 137, 138, 148, 171 and 172

b) Vertical overprint, reading downwards

PP58 1d lake-red (SG 43 or G1)
Plates 110, 113, 118, 119, 121, 122, 123, 124, 125, 127, 129, 130, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 152, 153, 154, 156, 158, 159, 160, 161, 162, 163, 165, 166, 167, 168, 170, 171, 172, 173, 174, 175, 177, 178, 179, 181, 186 and 187

Plate 154 is known unused.
Plate 136 has been found with the overprint in yellow.

Used on cover
Plates 119, 139, 154, 170, 171, 172, 187 and 1?6 have all been seen by the author.

PP58a As PP58 but overprint double.

Used on cover
129

1873. Unofficial underprint type 20 (over the gum) in black.

a) Vertical underprint, reading upwards

PP59 1d lake-red (SG 43 or G1)
Plates 170, 171, 174, 176, 181, 184, 186, 187, 190, 191, 192, 193, 194, 195, 196, 197, 198, 200, 202, 203, 204, 205, 207, 209, 213, 214, 217, 218, 221 and 223

Note.  Plate 213 is currently unlisted by Stanley Gibbons with this underprint.

Plate numbers 221 and 223 have been found unused.

b) Vertical underprint, reading downwards

PP60 1d lake-red (SG 43 or G1)
Plates 171, 183, 200, 203 and 206

Note.  Plate 203 is currently unlisted by Stanley Gibbons with this underprint.