A straight edge in a photograph is not enough to identify a stamp as an imperforate issue. Start with the seller’s exact description, ask which edges and separating features are visible, and keep any unresolved interpretation open. A useful purchasing record distinguishes the term used from the evidence supplied for it.
What the basic terms mean
The American Philatelic Society vocabulary describes perforations as separating holes and imperforate stamps as issued without them. The same glossary notes that coil stamps commonly have two opposing straight edges. These distinctions explain why a single straight side cannot settle the identification of an item.
The Scenic American Landscapes single-item catalog reference, PDD-013, can identify an inquiry. Its title does not specify a verified perforation variety or establish the edges of a current offered piece. Ask for the description applicable to the actual goods rather than extending a general product name into a more precise identification.
Ask what the photograph really shows
Request an overview that includes all edges and suitable detail of the feature in question. Identify the side using an agreed orientation. If an edge lies underneath another object, or a photograph cuts it off, mark it as not visible. The absence of visible holes in a cropped or low-resolution image is an evidence limitation, not a positive classification.
For a hypothetical item, the top edge may look straight while the left and right sides show a different outline. Record those observations individually. Do not compress them into “all edges straight” because the first photo attracted attention. Ask the seller to clarify the source of the terminology and whether a more complete description is available.
Avoid turning a visual observation into a variety claim
“Straight upper edge visible in photograph 1” is a limited observation. “Imperforate variety” is a broader identification claim. The latter may require evidence beyond an ordinary purchasing photograph. This article does not identify catalog varieties, authenticate material or provide instructions for testing or altering it.
Do not ask someone to trim, repair or remove material to make the object fit a description. If the distinction is consequential to the purchase and cannot be resolved by the available evidence, obtain appropriate specialist review before relying on the claim. Keep any review question tied to the exact offered item.
If the inquiry instead concerns a pattern of initials punched through the item, use the perfin pattern attribution guide to frame that separate identification question.
If the description concerns a pattern impressed into the paper rather than an edge, keep that question separate using the historical stamp grill evidence guide.
If the seller attributes the perforations to a private firm, ask which reference identifies the firm and how it matches the offered stamp. The private perforation guide explains how to record the visible edge pattern and the evidence for that attribution.
Use a short edge-description worksheet
Create four fields: seller’s exact term, visible feature and image reference, remaining uncertainty, and the next evidence question. An example entry could say “Seller describes imperforate; photograph shows one straight side; other edges obscured; request the full-edge view and basis for identification.” This preserves both the statement and its limits without endorsing it.
For a lot, identify whether the description applies to every item or only the photographed example. A detail image of one piece cannot establish a shared feature across an unexamined group. The lot-photo scope guide covers that separate image-to-offer connection.
Close the description question before reusing it
If a specialist document is supplied, use the certificate-to-item guide to check its scope. A document concerning another piece does not settle the description of this one. Keep unsupported wording out of a downstream listing until an appropriate review supports it.
Send the catalog link, intended collecting or display use, quantity and unresolved edge question through the inquiry channel. Request a current offer-specific response. Neither terminology, photographs nor this checklist establishes postal eligibility, investment value or official authorization.