This is a Llaves Telegraficas Artenasas (LTA) key. I purchased it a couple years ago and just decided to put it in operation. The inscriptions are WiMo and 0022. Gold plated brass. Any sharp of eye key afficionados out there?
By the way, the owner/designer of LTA SK'd a while back and all of the LTA keys in stock were sold. Not in business any longer to the best of my knowledge but the site is still up for posterity sake.
BINGO! Give that man a cigar! Not only are they counter sunk, they are not well insulated. It could be wired to the post in front but would be an absolute mess of wiring in the way of everything. There are normally three post on this type of key to attatch the wiring. Anyone want a paper weight?
It looks like the machining of the key just wasn't finished. Compare it to photos on MorseX.com. There are supposed to be attachment posts on the back of the key either side of the spring.
Apparently you're supposed to appreciate it as a work of art rather than for any utility. Not to worry, it's bound to be a valuable piece of collector's art now.
-----------
73, Steve
----------- 41 years in Amateur Radio