Yes, those should all be craftable. I think at least one of them had different stats upon introduction but were changed to what we see now on Allakhazam shortly afterwards.
https://web.archive.org/web/20010417...apon_stats.htm
^ States that the silvered long sword should be
6/27 rather than 7/27 (May 2001).
https://web.archive.org/web/20011213...apon_stats.htm
^ This snapshot from Dec 2001 has 7/27 as well as stats for mace, spear, and scimitar.
What I don't know is if they staggered implementing the recipes...it's doubtful since these are essentially magic versions of the regular forged stuff, but I can't access the old ezboard for EQTC anymore, so I can't read any of the tempting posts about tradeskills.
[You must be logged in to view images. Log in or Register.] It looks like they didn't know all of the recipes until after Feb 2002.
https://web.archive.org/web/20020802...ng_weapons.htm
^ This one from August 2002 mentions that
enchanted sheets of metal could only be made by human smiths in the human cultural forge until June 5 2002 (the rest of the recipe can be made in a normal forge). Also notes that two handed sword, bastard sword, and morning star are not valid silvered weapons.