DH Chipmunk stampings

Hello to all,

I’ve recently aquired some Chipmunk frames and sundries and wondered if anyone could decipher the stampings? I’m afraid I’ll have to describe them for now but hope to have some close-ups taken soon.

On Frames:

“1” over “CF FS 305” (part number?) with “114 DH” and “WP” in circles.

“1” over “C1 ES 306 (possibly 8?)”, “CKR” and “114 DH”, “WP” as above.

On a plate joining stringers:

“C1FSL035”

Regards all,

Rob