![37mm assortment - #21 by historian - General Ammunition Collector Discussion - International Ammunition Association Web Forum 37mm assortment - #21 by historian - General Ammunition Collector Discussion - International Ammunition Association Web Forum](http://www.oldammo.com/37x3c.jpg)
37mm assortment - #21 by historian - General Ammunition Collector Discussion - International Ammunition Association Web Forum
![Comparison I made to show a friend how the P39/63's 37mm shell compares to other autocannon rounds in size. : r/Warthunder Comparison I made to show a friend how the P39/63's 37mm shell compares to other autocannon rounds in size. : r/Warthunder](https://i.redd.it/byq966ypdxj61.png)
Comparison I made to show a friend how the P39/63's 37mm shell compares to other autocannon rounds in size. : r/Warthunder
37mm assortment - General Ammunition Collector Discussion - International Ammunition Association Web Forum
![2.13.0.125] 37mm Mark II HE(AP) shell mising - Documented Ground Suggestions - War Thunder - Official Forum 2.13.0.125] 37mm Mark II HE(AP) shell mising - Documented Ground Suggestions - War Thunder - Official Forum](https://i-com.cdn.gaijin.net/monthly_2021_10/tr_1932b.jpg.b1312209b1866ba671de1a7926c22d6f.jpg)