According to Eric's thread,
https://www.yenko.net/ubbthreads/ubbt...p_spot_a_re_st the blank squirter didn't show up until February of 1970. The date on your carb is December of 1969. So, with that information and noticing that the baseplate is an aftermarket, I would say it's a re-stamp. IMO
Once you install the carb, make sure you don't have any leaks...and don't use Teflon tape or thread sealant on the fuel lines.....it's not necessary. If a fuel fitting is leaking, it's either not tight enough/seated or you have a separate issue (crossed threads for example).
After setting the idle, hook a vacuum gauge up to the intake or watch your rpms if you have a tachometer. The idle mixture screws on the front metering block should be out one to one and a half turns. Screw in the idle mixture screws, one at a time. Try to get the most vacuum or rpm as you can....as soon as it starts to stumble, back it out a little.....do this a couple of times on each side. That should get you started on the idle.
After that, you will have to check/set up the vacuum secondary's. I would YouTube that information.
Kurt
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1969 SS396 Post Sedan Delivered to Van-T Topeka KS
MCACN Day2 Concourse Gold Award
1965 VW El Lobo Dune Buggy built in the mid 70’s for the Iowa Shriners
1968 Schwinn Orange Krate
1969 Schwinn Pea Picker
1968 Schwinn 5-Speed
1970 Schwinn 3-Speed Deluxe
1972 Schwinn 10-Speed Continental
1973 Schwinn 5-Speed Suburban
All Original Paint Bikes