Can you help me to identify this small pen? It’s 10.9 cm capped. There’s no writing on the cap or barrel, though there may have been at one time. It came with a Parker nib and the barrel is very Parker-ish. The cap fits very well but it doesn’t look like any Parker I know. Probably the parts are a mismatch but I’d like to know what the cp is, if that’s the case. It looks familiar but I can’t place it.