Sight seeing

[Slinky Pickle]

I've got my 2 old 1899Bs out today and was having a look at the sights.

The first is serial number 13,3XX

https://uploads.tapatalk-cdn.com/20191129/017b9dde60b09406342387d4ca396577.jpg

https://uploads.tapatalk-cdn.com/20191129/f36060df535d7ccbced0bf71da7d6a22.jpg


The next is serial number 80,2XX


https://uploads.tapatalk-cdn.com/20191129/b0362a62b7ea6b9397732a9b970fe0b0.jpg

https://uploads.tapatalk-cdn.com/20191129/c58b6ac0c931882faa039e333e78cbe7.jpg


My question is, are either of these sight combinations original to the gun and if so, which one(s)?

[Big Al1]

The front sight one first one looks original, sheard bead, not sure about rear sight.

Not sure about front sight on second one, rear sight looks like the Rocky Mountain buckhorn correct sight.