Help needed to identify parts via alpha numeric codes

Hello everyone,

I’ve been doing a number of digs here in Australia and have located a number of parts, many I have been able to identify, but have others which I can not identify or seem to have part numbers that

match much later aircraft types ie tubular frame with numbers that seem to belong to a jet? So I’ll post them and would appreciate any feedback on what these could be.

21F 3355 21 KBC tubular frame with cast alloy mounts.

D 11-38D tubular frame

D 15-652 tubular frame

FT 107 alloy casting

IT8J length of tube with gear ring

Y 58-?924 flycatcher and Harrow inspection stamp

Y 82-736 C as flycatcher and Harrow inspection stamp

W 47-562-1 appears to have a Hawker Inspection stamp

V 1013453 and AS54 inspection stamp

G 17-14304-1 and 140123

G 17-61367 and 147909

10219 with Ryan Aeronatical Stamp, and finally

1020475 with DH475 stamp, tube and alloy pulley system

Peter Smythe