Post by mac123 on Nov 20, 2024 5:18:48 GMT -5
The Stanley Gibbons catalog specifies the differences between the W111 and W111a in the following terms:
The first test I have done is to measure the watermark of a stamp that has only W111 watermark. This is what I did with SG # 418, ½ d green.
The doubt is whether I am measuring correctly. In this image, I measure from the base of one crown to the base of another crown.
In this image, I measure from the base of one R to the base of another R.
This measurement coincides with that specified in the catalog. But I still have doubts.
The first test I have done is to measure the watermark of a stamp that has only W111 watermark. This is what I did with SG # 418, ½ d green.
The doubt is whether I am measuring correctly. In this image, I measure from the base of one crown to the base of another crown.
In this image, I measure from the base of one R to the base of another R.
This measurement coincides with that specified in the catalog. But I still have doubts.