2 Match Box Covers Silver/Silverplate? ID help for marks req

[jekyll]

I have two match box covers as shown below but have had no luck in identifying the source of the marks. Both are badly tarnished but I hesitate cleaning them until I know for certain that they are silver/silverplate.

The first box has a floral motif (very hard to see with all the tarnish):

It is marked with a shield divided into three parts. I can not make out the upper left mark (could be a rooster or a lion set at an angle), the second section holds crossed keys and the bottom, third section could be a 'P' or an 'F':




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The second box has a hinged lid with a carriage pulled by horses, 4 riders and is inscribed 'London' within the design:



The mark is a rather primitive, simple looking shield with crossed keys:





I can find no other marks on either box. I've searched marks til I'm dizzy so any help to send me in the right direction would be very much appreciated.

[Waylander]

The second piece, with the crossed keys - while "crossed keys" are a very popular silverplate mark, they could be the mark of H. Wilkinson & Co, Sheffield makers. However, this is a rough guess at best.

Waylander