Unknown silverplate marks

[elenabutov]

Hi! Dear experts, can anyone help me find out where and when were made that spoons. They have the same design, but different marks. Thanks in advance.

[dognose]

Hi,

With the double number marking (90-18), I assume Germany.

See: http://www.925-1000.com/a_platenumbers.html

Do the letters read 'ABBO' or '1880' or......?

Trev.

[elenabutov]

Hi Trev, thank you very much for your attention to my question.It, in my opinion, looks like 1880.

What is your opinion about mark "R.F. 90" on another spoon?
Thanks again.