Odds are that it is one of many thousands of Remington rolling blocks in .43 Spanish that were brought back into the U.S. in the 1960's from Spain and other countries. There were so many and there was so little interest that Interarms turned many of them into floor lamps.
Those rarely had any marks identifying the caliber or the country that owned them. Few are found in good condition and value is not high, around $200.
The rolling block was widely used, including use by the U.S. Army and Navy in limited numbers, but those are marked accordingly. There were also tons of sporting rifles made in many calibers, but they would not have full length stocks and bayonets.