I've recently come across this reel and could use some feedback. I've seen pictures of early Etna reels that had the serial #, but omitted the reel size that usually precedes the serial #. As you can see this particular reel is lacking both which has me stumped. So, anyone have any thoughts ? Could this have been a reel from an early wooden box set, or prototype ? Why go to the trouble of not following up the No. with at least a serial # ? Looking at the reel under magnification I can find no evidence of anything being removed. Thanks in advance for any info you can provide !