At the needle exchange

[mackzmike]

Opening stanza draws the reader in very nicely. The whole poem has a unique flow to it. As far the stanza asking questions, I think if you combined it with the following stanza you could use the line "just pins and sin bins" which might flow better than "I ask for pins and sin bins." That way the line seems to directly follow the question.
But what do I know...

Either way it sounds good. Unique and original. Good job.