Dario Bardi's book is a good starter!
Basically he shows us three versions - 2 in photogravure and 1 in offset-litho! All very common he supposes!
to be continued ...
All about the 25p Quebracho
Moderador: Rein
- Rein
- Usuario Colaborador
- Mensajes: 6258
- Registrado: 13 Mar 2009 15:59
- Ubicación: Leiden, Netherlands
- Contactar:
Re: All about the 25p Quebracho
The coating at the back is spectaculiar!
The print is normal with a direction of printing [ink flowing] towards the left; the back of the stamp shows the typical pockmarks! It seems that the gum had been applied on the coating side of the paper!
Also clearly visible the RA of the watermark - RA instead of AЯ!!!!
to be continued ...
The print is normal with a direction of printing [ink flowing] towards the left; the back of the stamp shows the typical pockmarks! It seems that the gum had been applied on the coating side of the paper!
Also clearly visible the RA of the watermark - RA instead of AЯ!!!!
to be continued ...
Re: All about the 25p Quebracho
Rein: The definitive proof that the print was done on the uncoated side is to put the not printed surface under a UV light and see if that side is fluorescent. As you know, domestic coating was always fluorescent (or phosphorescent)..
José
José
- Rein
- Usuario Colaborador
- Mensajes: 6258
- Registrado: 13 Mar 2009 15:59
- Ubicación: Leiden, Netherlands
- Contactar:
Re: All about the 25p Quebracho
José,Otin escribió:Rein: The definitive proof that the print was done on the uncoated side is to put the not printed surface under a UV light and see if that side is fluorescent. As you know, domestic coating was always fluorescent (or phosphorescent)..
José
the coating has nothing to do with the luminescence!
The 25p does exist ONLY with coating and the luminescence F/F according to Bardi. Hence assuming that the coating itself does contain luminescence - which is not proven in the case of OBA or non-phosphorescence - the UV-reaction would still have been F/F!
As there is no coating in the case of my stamp at the front but there is at the back, we have a "simple" case of wrongly gummed sheets with gum on top of the coating.... Luminescence does not give extra information nor proof.
saludos, Rein
- Rein
- Usuario Colaborador
- Mensajes: 6258
- Registrado: 13 Mar 2009 15:59
- Ubicación: Leiden, Netherlands
- Contactar:
Re: All about the 25p Quebracho
It looks like a damaged stamp but when you meet a second copy?!
to be continued ....
to be continued ....
- Rein
- Usuario Colaborador
- Mensajes: 6258
- Registrado: 13 Mar 2009 15:59
- Ubicación: Leiden, Netherlands
- Contactar:
Re: All about the 25p Quebracho
In the case of Argentina with e stamps printed on a sheet-fed photogravure press, the gumming of the coated side was certainly a mistake!Rein escribió:The coating at the back is spectaculiar!
The print is normal with a direction of printing [ink flowing] towards the left; the back of the stamp shows the typical pockmarks! It seems that the gum had been applied on the coating side of the paper!
Also clearly visible the RA of the watermark - RA instead of AЯ!!!!
to be continued ...
But have any other copies been discovered in the last few years????