Mystery Nixie? Desk Clock?

Thank you for the complements. I have to say, I did alot of poking around on the net for help. The data book was also a help, which I happen to have from school days. (1992 or so). The 1 to 12 counter was a huge hurtle. The 7490 resets to zero and I could not figure put how to trick it to jump to one with the whacky 0-9 and 1-2 count needed for the hours position. So I used flip flops because I found info on someone doing this. But it did not work, I did make changes and figured it out. The time setting is my own doing and using button debouncing techniques. I learned alot on this project last year.

The mechanical equipment in my videos was my passion for years but I now have physical limitations which is why I swayed to clocks. Just dealing with bad carpal tunnel right now so I am slowed with that. It is easier to repair old production clocks than build from scratch right now.

thank you for the interest.
Jim

To finish this story, I did find another example of the same clock that the original poster had started this thread with. It has an early MM5314N with a 1972 date code with gold pins and 1973 dated RCA tubes.

Numitrons are on the list for me to build a clock out of one day. I think they look very cool.
I notice in the picture the second numitrons are smaller than the minutes and hours, do you know what the make of each are?

The big ones are DR-2000 and the small ones are DR-2100 made by RCA. (Apollo / IEE brand tubes have a prefix of DA instead of DR and are the same). xx-2010 and xx-2110 tubes are basically the same except have a decimal point added in on the xx-2010's which you would not use. Some RCA 2000 / 2010 Numitron tubes have round tops which I like more but not sure if it was just the early runs or what.....