Chinese Flying Geese Stamp. Help With ID

Hello,
Is this a rare chinese flying geese cancel and overprint? Is it early 50's? Any info is appreciated! Thanks for your time.

Suggest
Sc#1042 1951 A103 $5 surcharge P12.5 without gum red-brown opt

If it is $112 used $13

Thank you very much,Rod!

My query at large is , a stamp "without gum as issued" is evidenced quite clearly on the back as clean. What gum did they use then? Or is it a CTO perhaps?

From what I've found, anything and everything was used. Mucilage (famous brand on this side was LePage's) varied in strength by brand and seemed to be popular from tropical places. A fair number of packages from Taiwan used library paste (again different compositions and strengths) so you'd get warping of stamps (if you were lucky) from uneven glue application especially if carried via sea mail. But that stuff would probably make an airmail cover overweight.

If on an air cover like the geese and soaked off right away, I think you had the best chance of getting a stamp undamaged. Long term, no gum stamps on cover could just fall off or be stuck forever. Seems to be true for the later 1966-67 Geese regulars that were also no gum as issued.

Thanks for tackling a tough question HB, saved.