Now it’s much clearer: Porto Assay Office mark of 833-1,000 fineness, from 1938 onwards until 1984.
Thank you for the new image!
Yes, the image is much better now!
There is a saying: Â»New brooms sweep well — but the old ones know the cornersÂ«; yours old camera too!
The fineness is 833-1,000, the mark was used from 1938 on until 1984 (it’s a gull’s head in profile, above of the ciphers 833).
A similar maker’s mark, as it is on yours case, isn’t reported from 1887 on! In between I’ve looked 3 times trough all relevant registers; not only that of Porto, but of all Assay Offices of Portugal.
There is only one maker’s mark registered, which could be seen to be in details some thing similar in the contents of mark, except the cartouche. The outer frame (cartouche) of that mark is formed by an isosceles triangle.
That Â»triangleÂ« mark was registered in 1932 for the Porto silversmith Alfredo JosÃ© de Sousa. It isn’t mentioned, when that mark came in disuse, or was cancelled.
There is now imaginable, if Alfredo JosÃ© de Sousa has hold also that mark of yours case, that that has happen in 1938 or later — for maximum until 1984? That’s indeed a long time span.
Actually more I couldn’t do for you.
Â»925-1000Â« request you very kindly, to let stay the images visible - as long as ever possible. Thank you there fore!
Kind regards silverport