Hello 93x64mm

Thanks for the reply.

Here are some additional pictures. I've never seen "slots" like this cut into the action's water-table. Are they perhaps to remove weight? Is this any clue to a maker? Hammers are "re-bounding". The water-table also has the "Crown/V" proof but no other marks or serial number. In fact, there is no serial number found anywhere. Only the numbers 4824 and 7352 are on the bottom rib.

comment are welcome.