Discussion - Member to Member Sales - Research Center
Discussion - Member to Member Sales - Research Center
Many thanks,
Hugh
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I looked at Deegam. The printers were Enschedé and DLR and both fluoresce a mid-green color. They do not have phosphor. No variations noted.
Pure guess: some chemical reaction with something like when soaked, etc. unless the one on the right was printed by mistake on OBA (optical brightening agent) free paper since no reaction.
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Hugh, according to the excellent Adminware site (https://adminware.ca/machin/Index.php?Details=222) the gold flourescent ones are Enschede printing, the other ones are DLR.
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Wow. Thank you both so much for explaining this! I think I lucked out in getting an example of both printers in only three stamps. And what a trove of info on the Machin site!
Hugh
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Deegam does not mention the gold response under UV. I rechecked Deegam and it states "mid green" for the Enschedé and "grey green" for DLR.
I will check with Deegam to see if their catalog has an error. I know Robin Harris (adminware) relies on Deegam for some information.
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Without using a UV light, it is usually quite easy to distinguish the two printers, by looking at the ink to the right of the centre at the base of the sculpture of the Queen, especially if one uses a magnifying glass. On the original De La Rue printing, the ink has solid blotches. On the Enschede printing, the pixels of colour are more separated and the cross-hatching distinct and there are no blotches.
JTH
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I asked Deegam about the tagging description.
Here is the identifier in Deegam, I think the horizontal bar on the pound symbol (not number line referenced by Deegam) is another way. The DLR line is thicker.
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Oddly, I do not see that spur in the pound symbol on either of the stamps I've shown.
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I have a copy of each and I see the line referenced in Deegam for the Enschedé issue. If you do not have them they are both DLR.
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Have just checked the 4 that I have, one mint, 3 used.
Under 350nm only one appears gold/yellow. The others do not fluoresce at all
Under 254nm the gold/yellow is a bright green, the other 3 pale green.
None show the horizontal line in the "3".
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"Under 254nm the gold/yellow is a bright green, the other 3 pale green."
This means we know how Deegam checked the fluorescence.
I checked my Enschedé (my image) and I see the horizontal glitch but I wonder if all of them have this feature.
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Found another dozen used ones and confirm that the line is present on all of the Enschede ones, they also, as James (JTH) points out above, are better hatched below the bust base.
I also noticed that the curve on the internal upward base stroke of the 3 is smoother in Enschede as opposed to DLR which seem almost to have a ridge.
I sorted my used spares and found 7 of the 8 engraved issues, just missing the Enschede £5. I have the DLR set mint but not the Enschede.
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03:26:46pm
I have three copies of the violet £3 Machin (MH 323), two of which are shown in images here. The first image is taken under normal light. The second image shows the same stamps under a 380 nm light. In this case, the stamp on the left fluoresces to almost a gold, whereas the one on the right does not. My third stamp does not fluoresce either. Would the left one be a sub-variant and recognized by any of the catalogues?
Many thanks,
Hugh
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re: £3 Machin
I looked at Deegam. The printers were Enschedé and DLR and both fluoresce a mid-green color. They do not have phosphor. No variations noted.
Pure guess: some chemical reaction with something like when soaked, etc. unless the one on the right was printed by mistake on OBA (optical brightening agent) free paper since no reaction.
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Approvals
re: £3 Machin
Hugh, according to the excellent Adminware site (https://adminware.ca/machin/Index.php?Details=222) the gold flourescent ones are Enschede printing, the other ones are DLR.
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05:26:43pm
re: £3 Machin
Wow. Thank you both so much for explaining this! I think I lucked out in getting an example of both printers in only three stamps. And what a trove of info on the Machin site!
Hugh
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re: £3 Machin
Deegam does not mention the gold response under UV. I rechecked Deegam and it states "mid green" for the Enschedé and "grey green" for DLR.
I will check with Deegam to see if their catalog has an error. I know Robin Harris (adminware) relies on Deegam for some information.
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this post
re: £3 Machin
Without using a UV light, it is usually quite easy to distinguish the two printers, by looking at the ink to the right of the centre at the base of the sculpture of the Queen, especially if one uses a magnifying glass. On the original De La Rue printing, the ink has solid blotches. On the Enschede printing, the pixels of colour are more separated and the cross-hatching distinct and there are no blotches.
JTH
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re: £3 Machin
I asked Deegam about the tagging description.
Here is the identifier in Deegam, I think the horizontal bar on the pound symbol (not number line referenced by Deegam) is another way. The DLR line is thicker.
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11:30:47am
re: £3 Machin
Oddly, I do not see that spur in the pound symbol on either of the stamps I've shown.
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re: £3 Machin
I have a copy of each and I see the line referenced in Deegam for the Enschedé issue. If you do not have them they are both DLR.
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Approvals
re: £3 Machin
Have just checked the 4 that I have, one mint, 3 used.
Under 350nm only one appears gold/yellow. The others do not fluoresce at all
Under 254nm the gold/yellow is a bright green, the other 3 pale green.
None show the horizontal line in the "3".
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re: £3 Machin
"Under 254nm the gold/yellow is a bright green, the other 3 pale green."
This means we know how Deegam checked the fluorescence.
I checked my Enschedé (my image) and I see the horizontal glitch but I wonder if all of them have this feature.
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this post
Approvals
re: £3 Machin
Found another dozen used ones and confirm that the line is present on all of the Enschede ones, they also, as James (JTH) points out above, are better hatched below the bust base.
I also noticed that the curve on the internal upward base stroke of the 3 is smoother in Enschede as opposed to DLR which seem almost to have a ridge.
I sorted my used spares and found 7 of the 8 engraved issues, just missing the Enschede £5. I have the DLR set mint but not the Enschede.
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