18th century ?

[prezes_krkk]

Can some one help mi find out it these marks are 18th century and who the maker is?

http://a.imagehost.org/0032/georgiangravy.jpg

http://a.imagehost.org/0624/georgiangravymarks.jpg
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[buckler]

The marks are almost certainly for London 1781/82. The makers marks are obviously of a partnership but I'm unable to tell the exact letters except for the top left which is a T . It could be TL over IS which would make it Thomas Lawrence Jnr & James Sage's mark registered as smallworkers in March 1771.
The horizontal layout of the marks , with the makers mark at right angles rather worries me. I'm not familiar with this sort of item , but it seems more likely to be the mark on an item of flatware like a spoon, rather than a plate item. But I'll let others, more expert to comment
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[salmoned]

I wouldn't even commit to suggesting the upper left letter IS a 'T', it appears an overstrike and may be an 'I' or even another letter. Also, it may not be the upper left letter at all. This will require considerable imagination to decypher.
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