Look like the Webley Valuemax I just worked on.. Same looking piston seal and piston but yours may be longer. Did not have a top hat either and the guide had the same set-up with the steel washer. Are you going to replace the seal? If you do would like to know what you use. My seal looked good so did not change but sure there is a better seal. I did change the spring with a E3650, but of course mine is shorter, just 40 coils. I still have some to go on the break-in so sure it will improve.
Nice job and all you really did was clean it up while smoothing out the rough areas. I personally like it when it doesn't require a bunch of effort and time to get something shooting great.
Can anybody tell me what parts to order to rebuild my 100x?