This is a very unique and useable antique tack, or small nail puller. It has a unique design with a super strong thin steel V puller section that is rivoted in place.  The tempered V-shape nail puller extension is nearby the maker's mark that reads "CF MFG CO" in raised cast lettering.  The lettering is a bid difficult to read, and I am not sure about the letter F, and I don't know what company this lettering relates to.  There is a heavy duty cast steel neck that runs back into the hardwood handle and is strengthened by a steel furrule attached to the wood handle in the connection area.  As you can see there is some very minor wear on the V edges, but not bent or damaged.  The hardwood handle is in great shape too!  No damage.  One of the nicest designs we have seen for pulling tacks! It is about 6.75" long overall.